Eucalyptus leaves are a favorite of one of Australia’s most adorable marsupials, but that isn’t the only use for eucalyptus foliage. What are eucalyptus leaves used for? You may be familiar with the aroma of eucalyptus since one of eucalyptus leaf uses is in over the counter flu and cold remedies. The aboriginal people of Australia have other uses for the leaves though. Read on to learn how to use eucalyptus leaves.

What are Eucalyptus Leaves Used For?

As mentioned, eucalyptus foliage is a common ingredient in herbal cold and flu remedies. Other common eucalyptus leaf uses include massage oils, bath additives, as a tea, and in potpourri.

While the wood has been used for centuries by aborigines for boats, boomerangs, and spears, the essential oils found in the foliage are prized for their antiseptic properties used to treat coughs, sore throats, and other infections.

What to Do with Eucalyptus Leaves

If you get a hold of some fresh foliage, you’re probably wondering what to do with the eucalyptus leaves. You can hang the leaves to dry and use either in potpourri or dried floral arrangements or turn the fresh leaves into a tincture or oil.

Eucalyptus plants contain components with antibacterial, antiseptic, and expectorant properties. One of these components is called cineole, which loosens phlegm, eases coughs, and aids other common respiratory issues.

How to Use Eucalyptus Leaves

Use fresh eucalyptus leaves by brewing them into a tea or making a tincture. To make a tincture, put a half pound or so (227 g.) of fresh leaves into a large jar and cover it with vodka. Seal the jar and leave it for a couple of weeks, shaking it every so often. After two weeks, strain the contents through muslin. Store the tincture in a sealed jar in a cool, dry area.

To make a tea, steep half a teaspoon of crushed leaves in boiling water for ten minutes. The tea will ease congestion and sore throats. Strain the leaves from the tea prior to drinking. Drink the tea three times per day.

To ease congestion, asthma, and other breathing issues, hang a mesh bag filled with eucalyptus foliage under the hot tap as you run a bath, or pour boiling water over the leaves and hang your head, draped with a towel, over the steaming vapors.

Another use for the leaves is to use as a massage oil which can be used to treat skin inflammation and arthritis. The oil will also repel insects. Fill a jar with the eucalyptus foliage and add your choice of oil such as olive, jojoba, or sweet almond. Place the oil in direct sun for two weeks and then strain the leaves out. Use the oil liberally as required.

Do not eat the foliage of a eucalyptus. It is highly toxic and can result in nausea, vomiting, diarrhea, and can even induce comas.

Disclaimer: The content of this article is for educational and gardening purposes only. Before using or ingesting ANY herb or plant for medicinal purposes or otherwise, please consult a physician, medical herbalist, or other suitable professional for advice.

In areas of the world where eucalyptus has been cultivated as an exotic in plantations, the deadly eucalyptus canker disease can be found. Canker of eucalyptus is caused by the fungus Cryphonectria cubensis, and although the fungus is occasionally found in eucalyptus in Australia where the tree is native, is it not considered to be a serious problem there. However, in other regions where the tree is cultivated, such as Brazil and India, losses of eucalyptus trees with canker can be devastating.

Symptoms of Eucalyptus Canker Disease

Canker of eucalyptus was first identified in South Africa in 1988. Eucalyptus canker disease kills young trees in their first two years of life by girdling the stems at the base. The girdled trees wilt and in hot, dry summers, often die suddenly. Those that do not die immediately often have cracked bark and swollen bases. Initial symptoms of eucalyptus trees with canker is defoliation followed by the formation of cankers, infections of the bark and cambium. These necrotic lesions are produced by the breakdown of plant tissues resulting from the infection. Severe infection results in the death of the branches or even the crown. Eucalyptus trees are infected with canker through wounds when the asexual spores are dispersed by rain or in some regions wind and fostered by high temperatures. The extent to which the tree responds to the canker fungus is related to environmental conditions resulting in water or nutritional stress and defoliation.

Cryphonectria Canker Treatment

The most successful cryphonectria canker treatment involves circumventing mechanical damage as much as possible and in the case of accidental wounding, sanitary protection of the wound. Several varieties of eucalyptus are more prone to infection. These include:

• Eucalyptus grandis
• Eucalyptus camaldulensis
• Eucalyptus salign
• Eucalyptus tereticornis

Avoid planting these species in areas of eucalyptus production combined with climate conditions of extreme heat and heavy rains. E. urophylla seems to have a higher tolerance to the infection and would be a better option for planting.

A beautiful, showy tree native to Australia, the Snow Gum eucalyptus is a tough, easy-to-grow tree that produces lovely white flowers and grows in a wide variety of conditions. Keep reading to learn about Snow Gum eucalyptus care and how to grow a Snow Gum eucalyptus tree in the garden.

Eucalyptus Pauciflora Information

What is Eucalyptus pauciflora? The name pauciflora, which means “few flowers,” is actually a misnomer that can be traced back to some questionable botany in the 19th century. Pauciflora Snow Gum trees actually produce an abundance of attractive white flowers in the spring and early summer (October to January in their native Australia). The trees are evergreen and hardy down to USDA zone 7. The leaves are long, glossy, and dark green. They contain oil glands that make them glisten in the sunlight in a very distinctive way. The bark is smooth in shades of white, gray, and occasionally red. The bark sheds, giving it an attractive mottled appearance in various colors. Snow Gum eucalyptus trees vary in size, sometimes growing as tall as 20 feet (6 m.), but sometimes staying small and shrub-like at a mere 4 feet (1 m.).

How to Grow a Snow Gum Eucalyptus Tree

Growing Snow Gum eucalyptus is relatively easy. The trees grow well from seeds that come in the form of gum nuts. They will tolerate a huge range of soils, performing well in clay, loam, and sand. They do prefer slightly acidic to neutral soil. Like many eucalyptus trees, they are very drought tolerant and can recover well from fire damage. Snow Gum eucalyptus do best in full sun, and in a spot that is somewhat sheltered from the wind. Due to the oil in them, the leaves have a very pleasant fragrance. They are, however, toxic, and should never be eaten.

Silver princess eucalyptus is a graceful, weeping tree with powdery blue-green foliage. This striking tree, sometimes referred to as the silver princess gum tree, displays fascinating bark and unique pink or red flowers with yellow anthers in late winter or early spring, soon followed by bell-shaped fruit. Read on to learn more about silver princess eucalyptus trees.

Silver Princess Gum Tree Info

Silver princess eucalyptus trees (Eucalyptus caesia) are native to western Australia, where they are also known as Gungurru. They are fast-growing trees that can grow up to 36 inches (91.5 cm.) in a single season, with a lifespan of 50 to 150 years. In the garden, the nectar-rich blooms attract bees and other pollinators, and they make a cozy home for songbirds. However, the fruit, while attractive, can be messy. Silver Princess Growing Conditions If you are thinking about planting a silver princess eucalyptus, ensure you have a sunny location because the tree won’t grow in shade. Nearly any type of soil is suitable. Be careful about planting in windy spots because the roots are shallow, and a hard wind may uproot young trees. A warm climate is required and planting a silver princess eucalyptus is possible in USDA plant hardiness zones 8 through 11.

Caring for Silver Princess Eucalyptus

Water silver princess eucalyptus well at planting time, and then water deeply a couple of times every week throughout the first summer. Thereafter, the tree requires supplemental irrigation only during extended dry spells. Provide a slow-release fertilizer at planting time. Thereafter, don’t worry too much about fertilizer. If you think the tree needs a boost, fertilize the plant every spring. Be careful about trimming, as hard pruning may alter the graceful, weeping form of the tree. Prune lightly to remove damaged or wayward growth, or if you want to use the interesting branches in floral arrangements.

Eucalyptus is marked by distinctive, fragrant oil in the leathery leaves, bark, and roots, although the oil may be stronger in some species. The aromatic oil provides a number of herbal eucalyptus benefits, as described in this article.

Eucalyptus Herb Information

There are more than 500 species of eucalyptus, all native to Australia and Tasmania, ranging from small, shrubby plants that grow in containers to others that grow to great heights of 400 feet (122 m.) or more. Most are easy to grow in the mild climate of USDA plant hardiness zones 8 through 10.

You’re probably familiar with the aroma of eucalyptus oil, which is an important component in many common products such as cough drops, throat lozenges, ointments, liniments, and chest rubs. Eucalyptus oil is also an effective insect repellent and is often used to treat minor cuts and wounds.

For home gardeners, herbal tea made from fresh or dried leaves is the most convenient way to take advantage of herbal eucalyptus benefits. It’s easy to dry entire eucalyptus branches and then strip the dry leaves later. Alternatively, you can strip the fresh leaves, which can then be dried and stored in glass containers. Sip the tea or use it as a gargle to ease sore throats or spritz cool tea on insect bites or minor skin irritations. To soothe sore muscles or aching joints, add a few leaves to a warm bath.

How to Grow Eucalyptus as an Herb

While globe eucalyptus is most popular in American gardens, you may want to consider a smaller variety such as E. gregsoniana, E. apiculata, E. vernicosa, or E. obtusiflora, all of which reach mature heights of 15 to 20 feet (5-6 m.).

Start with the largest pot available. Once the tree outgrows the pot, it’s best to discard it and start over with a fresh seedling, as eucalyptus trees grown in pots don’t take to transplantation to the ground. If you live in a warm climate and you want to grow eucalyptus in the ground, it’s best to make that decision from the beginning.

Keep in mind that eucalyptus needs a location in full sunlight, with protection from the wind. If you live in a chilly climate and want to grow eucalyptus in a pot, you can always leave it outdoors during the summer, then bring it in before temperatures drop to near freezing in autumn.

Growing Eucalyptus Herbs

If you’re the adventurous type, you can plant eucalyptus seeds a few weeks before the last frost in your area. Plan ahead because the seeds require a stratification period of about two months.

Eucalyptus seedlings don’t always transplant well, so plant seeds in peat pots, which help prevent transplant shock. Place the peat pots in a warm area and mist them frequently to keep the soil evenly moist, but never saturated. Move the seedlings outdoors after the last frost.

Eucalyptus needs full sunlight and well-drained soil (or potting soil, if you’re growing eucalyptus in a pot). If you’re growing eucalyptus indoors, place the tree in the sunniest window, preferably south-facing.

Eucalyptus Plant Care

Water eucalyptus regularly, especially during warm, dry weather. Eucalyptus is drought tolerant and will rebound from a slight wilt, but it may not recover if the foliage is allowed to shrivel. On the other hand, avoid overwatering.

Lemon eucalyptus (Eucalyptus citriodora syn. Corymbia citriodora) is an herb but it’s hardly a typical one. Lemon eucalyptus information suggests that the herb can grow to 60 feet (18.5 m.) high and even taller. For more lemon eucalyptus information, including how to care for lemon eucalyptus, read on.

Lemon Eucalyptus Information

This plant is an attractive Australian native. It has sword-shaped, gray-green leaves and tiny, white flowers. The lemon eucalyptus plant, also known as lemon-scented gum, has a more pungent smell than other citrusy herbs, like lemon verbena, lemon balm, and lemon thyme. If you touch a leaf, the air is infused with the super-strong scent of lemon. In fact, if you’ve ever burned a citronella candle, don’t think it is scented with real lemon fragrance. Rather, it is made with oil from lemon eucalyptus bush leaves.

Lemon Eucalyptus Plant Care

If you are thinking of growing lemon eucalyptus, you need to learn about lemon eucalyptus plant care. It isn’t a very difficult plant to grow. You can grow the herb as an annual or a perennial. The plant in the wild is a broad-leafed evergreen bush or tree that can live a long time. Alternatively, you can grow it in a pot as an herb. Whichever way you want to grow the plant, you have to learn how to care for lemon eucalyptus plants. You can start growing lemon eucalyptus outside if you live in U.S. Department of Agriculture plant hardiness zones 9 and higher. Be sure you have enough room, however. One way to limit the size of the plant is to grow it in a container. If you are growing lemon eucalyptus in a pot, the herb will not get taller than four feet (1 m.). These plants have shallow roots and resent root disturbance, so grow them in containers before you set them outside. However, in windy areas you need to plant them in their permanent locations while they are still fairly young to make sure they do not suffer from wind rock. Think sun for the lemon eucalyptus. Don’t plant this herb in the shade or it will die. It will accept almost any type of soil, including nutritionally poor soil. Still, lemon eucalyptus plant care is easiest if you plant it in well-draining soil. You’ll have to provide regular water for the first years. After the tree is established, it is drought tolerant.

Lemon Eucalyptus Uses

It’s not difficult to describe possible lemon eucalyptus uses. Generally, gardeners like growing lemon eucalyptus for its ornamental qualities and for the fragrance of its leaves. In addition, however, it can be grown as a bee crop. The bush flowers are rich in nectar and excellent for attracting bees.

Eucalyptus trees (Eucalyptus spp.) are tall, beautiful specimens. They adapt easily to the many different regions in which they are cultivated. Although they are quite drought tolerant when established, the trees can react to insufficient water by dropping branches. Other disease issues can also cause branch drop in eucalyptus trees. Read on for more information about falling eucalyptus branches.

Eucalyptus Branch Drop

When eucalyptus tree branches keep falling from the tree, it may mean that the tree is suffering from disease. If your eucalyptus tree suffers from an advanced rot disease, the leaves wilt or become discolored and fall from the tree. The tree may also suffer eucalyptus branch drop. Rot diseases in the tree occur when the Phytophthora fungi infects the roots or crowns of the tree. You may be able to see a vertical streak or canker on infected eucalyptus trunks and a discoloration beneath the bark before you see falling eucalyptus branches. If dark sap oozes from the bark, your tree likely has a rot disease. As a result, branches die back and may fall from the tree. If branch drop in eucalyptus signals a rot disease, the best defense is planting or transplanting the trees in well-drained soil. Removing infected or dying branches may slow the spread of the disease.

Eucalyptus Branches Falling on Property

Falling eucalyptus branches do not necessarily mean that your trees have a rot disease, or any disease for that matter. When eucalyptus tree branches keep falling, it may mean that the trees are suffering from extended drought. Trees, like most other living organisms, want to live and will do whatever they can to prevent demise. Branch drop in eucalyptus is one means the trees use to prevent death in times of severe lack of water. A healthy eucalyptus tree suffering from long-term lack of water may suddenly drop one of its branches. The branch will not show any sign of disease on the inside or the outside. It will simply fall from the tree to allow the remaining branches and trunk to have more moisture. This presents a real danger to homeowners since the eucalyptus branches falling on property can cause damage. When they fall on human beings, injuries or death can be the result.

Advance Signs of Falling Eucalyptus Branches

It is not possible to predict the falling eucalyptus branches in advance. However, a few signs may indicate possible danger from eucalyptus branches falling on property. Look for multiple leaders on a trunk that might cause the trunk to split, a leaning tree, branch attachments that are in a “V” shape rather than a “U” shape and decay or cavities in the trunk. If the eucalyptus trunk is cracked or the branches hanging, you may well have a problem.

Eucalyptus are tall trees with shallow, spreading roots adapted to the harsh growing conditions in their native Australia. While this may not pose an issue here, in the home landscape the shallow root depth of eucalyptus can become problematic. Read on for more information about eucalyptus shallow root dangers.

Eucalyptus Shallow Root Dangers

Eucalyptus trees are native to Australia, where the soil is so leached of nutrients that the trees stay smaller and their roots must dive deep in order to survive. These trees are not likely to suffer damage like that from strong storms and wind. However, eucalyptus trees are also cultivated in many parts of the world with richer soil. In more fertile soil, eucalyptus tree roots have no need to descend very far to search for nutrients. Instead, the trees grow tall and fast, and the roots spread horizontally near the surface of the soil. Experts say that 90 percent of a cultivated eucalyptus’s root system is found in the top 12 inches (30.5 cm.) of soil. This results in eucalyptus shallow root dangers and causes wind damage in eucalyptus, among other issues.

Eucalyptus Tree Root Damage

Most eucalyptus tree problems occur when the ground is wet. For instance, when rain soaks the ground and the wind roars, the shallow root depth of eucalyptus make the trees more likely to topple over, as the foliage on eucalyptus branches acts as a sail. Winds tip the tree back and forth, and the swaying loosens the soil around the trunk base. As a result, the tree’s shallow roots tear, uprooting the tree. Look for a cone-shaped hole around the trunk base. This is an indication that the tree is at risk of uprooting. In addition to causing wind damage in eucalyptus, the tree’s shallow roots can cause other problems for homeowners. Since the tree’s lateral roots spread up to 100 feet (30.5 m.) out, they can grow into ditches, plumbing pipes and septic tanks, damaging and cracking them. In fact, eucalyptus roots penetrating foundations is a common complaint when trees are placed too close to the home. The shallow roots can also lift sidewalks and damage curbs and gutters. Given the thirst of this tall tree, it may be hard for other plants to obtain required moisture if they grow in a yard with a eucalyptus. The tree’s roots sop up everything available.

Planting Precautions for Eucalyptus Root System

If you intend to plant a eucalyptus, place it far from any structures or pipes in your yard. This prevents some of the eucalyptus shallow root dangers from being realized. You might also want to consider coppicing the tree. This means cutting down the trunk and allowing it to grow back up from the cut. Coppicing the tree keeps down its height and limits root and branch growth.

Eucalyptus trees are known for their large stature. Unfortunately, this can make them hazards in the home landscape, especially in wind-prone areas. Keep reading for more information and tips on preventing eucalyptus tree wind damage.

Eucalyptus Trees and Wind

Did you know that there are over 700 species of eucalyptus? Most of them hail from Australia. Eucalyptus trees, in their native habitat, are used to non-nutritious soils. They also have to withstand a lot of leaf-munching predators like koala bears. These conditions help keep their size in check. Eucs, as they are sometimes called, have to grow quickly – in order to beat the competition.

Eucalyptus trees have far fewer predators and are often installed in much richer soils when they are grown in North American and European parks and gardens. In these conditions, they don’t have to dig deep to find nutrients. These evergreen transplants grow shallow roots and are generally unchecked by pests or competition.

Growing eucalyptus in wind prone areas can be dangerous. Eucalyptus hazards include branch breakage, limb drop and complete tree failure at the base of the root plate – which is called wind throw. Most eucalyptus trees and windy conditions don’t go well together.

Preventing/Treating Eucalyptus Tree Wind Damage

The best way to prevent eucalyptus tree wind damage is to choose wind tolerant eucalyptus species which are shorter and have smaller, lower canopies that are less susceptible to breezes. A few of these wind tolerant eucalyptus trees include:

• E. apiculate
• E. approximans
• E. coccifera

While your eucalyptus tree is becoming established, prevent all soil and moisture competition by removing weeds. This way it can develop a stronger root system.

It is important to regularly prune your eucalyptus in wind prone areas. Prune in fall before there is risk of frost. Create a good structure. Remove top heavy branches. Some people like to coppice their eucalyptus by cutting them to about 18” (46 cm.) tall every year. This is best for multi-trunk trees that you want to keep in shrub form. Keep the tree thinned out of excess foliage as it matures. This will allow more wind to pass through the canopy without causing damage.

Younger trees can be staked low on the trunk. Do not keep or add a stake that is right next to the trunk. This is a recipe for a lazy, weak tree. Trees need to move with the wind. When you stake a eucalyptus, use sturdy stakes that are installed at least 1-3’ (.3 - .6 m.) from the trunk at right angles to the wind. Secure them with rubber ties or cloth that won’t damage the bark.

Check your trees regularly for wind damage. If branches break or crack, remove them.

When a tree experiences wind throw, the soil around the roots is often lifted up and loosened. Tamp it down again so the soil is firm and solid around the roots. You can also stake trees damaged and bent over by wind throw. Stake them as described above with the stakes at least 1-3’ (.3 - .6 m.) from the trunk.

Potted indoor eucalyptus trees (Eucalyptus cinerea) are pretty and fragrant houseplants in the right conditions. Most of us have seen tall eucalyptus trees that stretch into the skies. You may not know that smaller eucalyptus varieties can be grown as fragrant and lovely houseplants. Learn how.

Quick Facts

• Botanical name: Eucalyptus cinerea
• Height: 15 to 52 feet (4.5 to 15.8 m)
• Spread: 10 - 15 feet (3 - 4.5 m)
• Sun exposure: Full sun
• Soil requirements: Well-draining
• Hardiness zones: 8b to 11
• When to plant: Spring or summer

Can Eucalyptus Grow Indoors?

The species eucalyptus matures into a very tall tree, appropriate for parks or forests. It won’t last long as a container houseplant. But the variety known as Silver Dollar Tree or Argyle-Apple, stays smaller and can make a lovely eucalyptus plant indoors. These trees can be grown indoors or on a patio in bright, direct sunlight.

Indoor Eucalyptus Plant Care

Light

Eucalyptus, tall or small, need lots of bright, direct sunlight.

Water

Newly transplanted young trees require regular irrigation. As the trees establish, they become drought tolerant. Plants in containers like eucalyptus trees indoors need more regular water to keep the compost moist throughout the growing season.

Temperature & Humidity

These trees are winter hardy to USDA zone 8 and can grow happily in warmer regions. They do not appreciate sites that are chilly or get frost in winter. Houseplants are generally happy with ordinary household temperatures and humidity levels.

Soil

Plant in well-drained soil. It tolerates most soil types and does just fine in poor soils.

Fertilizer

Eucalyptus grows well in poor soil. If you add compost or other soil enrichment, your outdoor tree will get excessive leafy growth. The only time you should prune established trees growing in the ground is after a severe pruning. Apply a fertilizer like pelleted poultry manure according to package instructions. For container eucalyptus, use a general purpose fertilizer monthly from April through September.

Problems, Pests & Diseases

Eucalyptus trees are tough and don’t suffer from many issues. Occasionally, a plant may be attacked by Eucalyptus gall wasp (especially in southern England). Sometimes you may see small swelling on the leaves, or oedema, caused by waterlogged soil. Finally, a type of fungus called honey fungus can attack the roots of the tree and kill it. Look for clusters of golden-brown toadstools in fall.

How to Plant a Eucalyptus Tree Indoors

For eucalyptus trees to be houseplants, they must be planted in a container, and the right planting container is important.

Be sure the container's drain holes are adequate since waterlogged soil won’t be good for the plant. Purchase a soil-based, multipurpose compost for planting and up the drainage by blending in up to 30 percent horticultural grit.

Pruning

Mature eucalyptus hardly ever require pruning. However, when the trees are newly planted, trim them to form well-shaped trees. (See our guide to eucalyptus pruning as pruning may be needed in a few cases.) If you need to keep the tree small, coppice the plant every few years. This is best done in spring.

Propagation

Eucalyptus trees produce seed capsules that, when they ripen, can be used to propagate the plants. The capsules do not mature until after they spend several years on the tree. After that, they need to be kept in a refrigerator for several months before spring planting.

Repotting an Indoor Eucalyptus Tree

Repot your indoor eucalyptus tree every few years. Select a container about an inch or two (2.5 - 5 cm) larger than the prior container. At this time switch out the potting material to fresh compost.

Varieties

Eucalyptus cinerea, known as Argyle Apple or Silver Dollar tree, is a shorter variety of eucalyptus that works well for indoor houseplants.

Frequently Asked Questions

Eucalyptus trees naturally grow in some of the most arid regions of the world. This being said, the plants do require moisture, especially for the first two years of establishment. The roots grow slowly and gradually spread out around the trunk zone. Knowing when to water a eucalyptus tree is only part of the equation. The rate and diameter needed to reach the roots is also important knowledge. Eucalyptus tree watering needs will also change depending upon the season and your soil type. Here are a few guidelines on watering eucalyptus trees for optimum health and water conservation.

Rates for Eucalyptus Tree Watering

Irrigating eucalyptus trees is most important in the first couple of years, but even established trees need a regular watering schedule. Eucalyptus are evergreen trees and do not recover well from wilting. Deciduous trees have the option to drop their leaves to conserve moisture and make recovery more possible, but evergreens keep their leaves. The leaves draw much of the moisture and evaporation, which drains the tree of water. Overwatering eucalyptus trees is a possible result of over vigilance. Young trees only require 1 to 2 gallons (3-6 L.) of water during the dry months. This can occur once per week in most soils but may require irrigating daily in sandy soils in full sun. The actual rate once the tree has grown will vary due to soil porosity and site but, on average, the soil should be moist 3 feet (1 m.) down into the earth. Young trees should be moist 2 feet (61 cm.) down. It is important to keep expanding the watering zone out from the trunk as the root system spreads. Mature trees should be watered out from the canopy to capture the lateral root tips where most of the nutrients and moisture are harvested.

When to Water a Eucalyptus Tree

Early morning or evening is the best time for watering eucalyptus trees. This promotes maximum usage of water, and the cooler temperatures reduce evaporation. Water eucalyptus deeply rather than in shallow sprinkles. This helps leach soil of salt buildup and allows water to reach the deeper roots. A slow application rate is preferable because it allows dry soil to soften up and increases percolation. When irrigating eucalyptus trees with a drip system, it should be expanded over time as the tree grows. Similarly, with an irrigation system, the emitters need to be moved out over the root zone. Overall, in hot climates, it is best to water new trees at least once per week and established trees every 7 to 21 days. The more frequent time recommendation is for trees in sandy soil.

Types of Eucalyptus and Their Water Needs

Overwatering eucalyptus trees is also a danger. It might be helpful to know the water needs of many common species, as these vary. For instance, Eucalyptus preissiana has the lowest water needs of all the species and Eucalyptus deglupta requires regular moderate moisture. The following are considered low moisture plants:

• Eucalyptus microtheca
• Eucalyptus pulverulenta
• Eucalyptus erythrocorys
• Eucalyptus ficifolia
• Eucalyptus forrestiana
• Eucalyptus lehmannii
• Eucalyptus maculate
• Eucalyptus nicholii
• Eucalyptus nutans
• Eucalyptus platypus
• Eucalyptus polyanthemos
• Eucalyptus sideroxylon
• Eucalyptus torquata
• Eucalyptus viminalis
• Eucalyptus qunnii

If in doubt about your tree variety, monitor water needs by digging into the soil and checking for moisture at least 2 feet (61 cm.) down in the dry season and watch the plant’s leaves for signs of wilting or stress.

California hillsides were ablaze last year, and it looks like a similar disaster may occur again this season. Eucalyptus trees are common in California and the warmer states of the United States. They are also found in Australia, of which many are native. The blue gum variety was introduced around the 1850s as ornamental plants and as timber and fuel. So, are eucalyptus trees flammable? In a nutshell, yes. These beautiful stately trees are filled with aromatic oil, which makes them highly combustible. The picture this paints is of California and other areas experiencing serious eucalyptus fire damage.

Are Eucalyptus Trees Flammable?

Eucalyptus trees are widespread in California and have been introduced to many other warm states. In California, the trees have spread so prolifically that there are entire woodlands almost completely made up of gum trees. Efforts are underway to eradicate the introduced species and return woodlands to their native species. This is because the eucalyptus has displaced natives and it changes soil composition where it grows, altering other life forms as it does so. Eucalyptus fire hazards are also cited in efforts to remove the trees. There are some native eucalypti, but the majority have been introduced. These hardy plants have delightfully scented, volatile oil in all parts of the plant. The tree sheds bark and dead leaves, which make a perfect pile of tinder under the tree too. When the oils in the tree heat up, the plant releases flammable gas, which ignites into a fireball. This accelerates the eucalyptus fire hazards in a region and discourages firefighting efforts. Removal of the trees has been recommended largely due to eucalyptus fire damage but also because they are taking the place of native species. The plants are considered dangerous in fire-prone areas because of their habit of shooting sparks if they catch fire. Eucalyptus oil and fire are a match made in heaven from the fire’s perspective but a nightmare for those of us in its path.

Eucalyptus Oil and Fire

On hot days, in Tasmania and blue gum’s other native regions, eucalyptus oil vaporizes in the heat. The oil leaves a smoggy miasma hanging over the eucalyptus groves. This gas is extremely flammable and the cause of many wildfires. The natural detritus under the tree is resistant to microbial or fungal breakdown due to the oils. This makes the tree’s oil a wonderful antibacterial, antimicrobial, and anti-inflammatory, but the unbroken-down material is like using kindling to start a fire. It is tinder dry and contains flammable oil. One bolt of lightning or a careless cigarette and the forest can easily become an inferno.

Fire Friendly Flammable Eucalyptus Trees

Scientists speculate that flammable eucalyptus trees evolved to be “fire-friendly.” Rapidly catching fire until there is no obvious tinder allows the plant to retain most of its trunk when fire moves on to find more to burn. The trunk can sprout new limbs and regenerate the plant unlike other types of trees, which have to re-sprout from the roots. The ability to retain the trunk gives the eucalyptus species a jumpstart on regrowing from the ashes. The plant is already head and shoulders above the native species when fire recovery begins. The eucalyptus trees' easy recovery added with its volatile oily gasses, make it a potentially threatening species for California woodlands and similar areas known to house these trees.

Most trees shed bark as new layers develop under older, dead bark, but in eucalyptus trees, the process is punctuated by a colorful and dramatic display on the trunk of the tree. Learn about peeling bark on a eucalyptus tree in this article.

Do Eucalyptus Trees Shed Their Bark?

They certainly do! The shedding bark on a eucalyptus tree is one of its most charming features. As the bark dries and peels, it often forms colorful patches and interesting patterns on the trunk of the tree. Some trees have striking patterns of stripes and flakes, and the peeling bark may expose the bright yellow or orange colors of the new bark forming underneath. When a eucalyptus is peeling bark, you don’t need to be concerned for its health or vigor. It is a natural process that occurs in all healthy eucalyptus trees.

Why Do Eucalyptus Trees Shed Bark?

In all types of eucalyptus, the bark dies each year. In smooth bark types, the bark comes off in flakes, curls, or long strips. In rough bark eucalyptus, the bark doesn’t fall off as easily but accumulates in entwined, stringy masses of the tree. Shedding eucalyptus tree bark may help keep the tree healthy. As the tree sheds its bark, it also sheds any mosses, lichens, fungi, and parasites that may live on the bark. Some peeling bark can perform photosynthesis, contributing to the rapid growth and overall health of the tree. Although the peeling bark on a eucalyptus is a big part of the tree’s appeal, it is a mixed blessing. Some eucalyptus trees are invasive, and they spread to form groves because of their lack of natural predators to keep them in check and the ideal growing conditions in places like California. The bark is also highly flammable, so the grove creates a fire hazard. Bark hanging loose on the tree makes ready tinder, and it quickly carries the fire up to the canopy. Attempts are underway to thin stands of eucalyptus and remove them entirely from areas prone to forest fires.

A eucalyptus tree dripping sap is not a happy plant. The condition often indicates that the eucalyptus tree is under attack from a type of insect called the eucalyptus borer. A eucalyptus tree oozing sap onto limbs, or the trunk is very likely a tree attacked by a long-horned borer insect. Very few options exist for assisting the tree once it is attacked. Since often it is stressed trees that are infested, the best defense is to provide adequate irrigation and use good cultural practices. Read on for more information about the causes of eucalyptus tree oozing.

Why is My Eucalyptus Tree Leaking Sap?

The first time you see a eucalyptus tree dripping sap, you may think it looks like it is weeping or bleeding. In fact, the fluid you see coming from holes in the weeping eucalyptus is the attempt of the eucalyptus to kill and wash out boring insects. Several species of long-horned borer beetles can damage eucalyptus trees. They are attracted to trees suffering from water stress, as well as freshly cut eucalyptus wood. These beetles have antennae as long as or longer than their bodies. Female beetles lay up to 300 eggs beneath loose bark on stressed trees. The eggs hatch in a few weeks and bore into the inner bark of the tree. The larvae dig out long galleries, then pack them with frass excrement and wood shavings. After several months, the larvae pupate and emerge as adults to repeat the cycle. The eucalyptus tree responds to the wounds by flooding the holes with a chemical called “kino,” or sap, to trap and kill the bugs. That is when a gardener begins to ask, “Why is my eucalyptus leaking sap?”. Unfortunately, the tree is not always successful in repelling insects.

Leaking of Eucalyptus Trees

When you see weeping eucalyptus, the tree is already infested with the larvae. At this stage, no pesticides are very effective in helping the tree, since the larvae are already inside the wood. The best way to help a eucalyptus tree avoid a borer attack is to provide it with sufficient irrigation. The specific amount of water required by a tree depends on the planting site and the species. Generally, it is a good idea to irrigate your eucalyptus tree infrequently but generously. Once a month, provide enough water to penetrate a foot (30.5 cm.) or more below the surface. Use drip emitters for several days to allow the water to seep into the soil. In order to prevent weeping eucalyptus, it also pays to choose the species you plant carefully. Some species and cultivars are more resistant to these pests and to drought. On the other hand, eucalyptus species that come from the wetter regions of Australia fare particularly badly in a prolonged drought. They are especially susceptible to being attacked and killed by borers.

What diseases affect a eucalyptus tree? Eucalyptus is a sturdy, fairly disease-resistant tree, and attempting to troubleshoot dying eucalyptus trees is a difficult and disheartening endeavor. Read on for more information about eucalyptus tree diseases, and tips on treating disease in eucalyptus.

Diseases of Eucalyptus Trees

When it comes to diseases of eucalyptus, wet weather, poor drainage, or damp conditions that prevent air circulation from reaching the center of the tree are often the culprits.

• Anthracnose – This group of fungal diseases affects primarily branches, twigs and leaves, and is recognized by curled, distorted growth and small black, tan or brown lesions. Younger trees are most susceptible. Anthracnose is related to excessive moisture and often follows moist springtime weather. Control the disease by pruning affected trees in fall and winter, but avoid severe pruning, which creates watersprouts – vigorous, unsightly growth that is more susceptible to disease. Application of fungicide in early spring may help staunch the disease.
• Phytophthora – Often identified as root, crown, foot or collar rot, Phytophthora is a fungal disease that affects a huge number of woody plants, including eucalyptus. It can attack all parts of the tree and is often evidenced by wilted, yellowing foliage, stunted growth, and reddish, orange or brown cankers on the trunk and stems or under the bark. The tree may ooze a reddish or dark sap that stains the trunk. Fungicides are sometimes useful if applied early, especially when combined with improved cultural practices.
• Heart rot – Often known as sap rot, heart rot is a group of several types of fungi that causes decay in the centers of limbs and trunks. Although the disease isn’t always easy to spot on the surface of the tree, damage can travel relatively quickly. Old, weak trees are more susceptible and trees that fall in rain or wind can be hazardous. Regular, careful pruning that allows rainwater to drain helps prevent the disease and safe removal of dead or disease growth helps keep the disease in check. Badly affected trees should be severely trimmed or removed.
• Powdery mildew – This common fungal disease is easy to recognize by a powdery white growth on leaves and stems. Horticultural sprays are often affective, and sulfur may help when applied before the disease is noticeable. Fungicides may be of some effectiveness in the early stages of the disease. Avoid high nitrogen fertilizers, which produce flushes of highly susceptible new growth.

Proper pruning of eucalyptus is critical. Disinfect cutting tools between each cut, and dispose of infected plant parts properly. Irrigate eucalyptus trees in morning so the leaves have time to dry. If you are planting new eucalyptus, look for disease-resistant varieties.

Eucalyptus (Eucalyptus spp.) are native to Australia, but the quick-growing trees have been cultivated around the world for their attractive peeling bark and fragrant foliage. Although more than 900 species of eucalyptus trees exist, some are more popular than others in the United States. Read on for information about popular eucalyptus tree types.

Eucalyptus Tree Identification

Trees of the genus Eucalyptus come in all sizes, ranging from short, bushy varieties to soaring giants. All share the pungent aroma for which their leaves are famous, as well as exfoliating bark. These are the qualities that facilitate eucalyptus tree identification. Eucalyptus trees grow fast and generally live a long time. The many different species fall into several eucalyptus tree types.

Mallet Types of Eucalyptus Trees

You can divide eucalyptus tree types into categories related to their growth patterns. Some types of eucalyptus trees have only one trunk and notable space between branches. These open-branched forms are terms “mallet” eucalyptus tree varieties. Recognize mallet eucalyptus tree varieties by the way the branches angle upward from the tree trunk, allowing light to filter between them. Two popular mallet varieties are the sugar gum tree (Eucalyptus cladocalyx) and the red-spotted gum tree (Eucalyptus mannifera). Both grow to about 50 to 60 feet tall (15-18 m.) and thrive in the warmer USDA plant hardiness zones 9 through 10.

Marlock Eucalyptus Tree Varieties

Other varieties of eucalyptus trees offer denser foliage that often grows nearly to the ground. These types are termed “marlock” varieties. If your tree is about 35 feet tall (11 m.) and offers lime-colored flowers and oval leaves, it is probably a marlock called round-leafed moort (Eucalyptus platypus). This tree is hardier than most eucalyptus tree varieties, growing happily in USDA zones 7 through 8.

Mallee Eucalyptus Tree Types

When it comes to eucalyptus tree identification, remember that shorter versions look more like shrubs than trees. These are termed “mallee” types of eucalyptus. If your tree is under 10 feet (3 m.) tall, it is likely a mallee. Recognize this type by its many stems and bushy appearance, as well as its height.

Problems with Some Eucalyptus Tree Varieties

Some types of eucalyptus trees are invasive. This means that they escape cultivation and grow in the wild, shading out native plants. Blue gum (Eucalyptus globulus), for instance, is one such variety. Another problem with eucalyptus trees is the fact that their leaves, full of pungent oils, can make them fire hazards when planted in groups or forests.

People fall in love with rainbow eucalyptus the first time they see it. Intense color and astringent fragrance make the tree unforgettable, but it's not for everyone. Here are a few things you should know before you rush out to buy one of these outstanding beauties.

Where Do Rainbow Eucalyptus Grow?

Rainbow eucalyptus (Eucalyptus deglupta) is the only eucalyptus tree indigenous to the northern hemisphere. It grows in the Philippines, New Guinea, and Indonesia where it thrives in tropical forests that get a lot of rain. The tree grows up to 250 feet (76 m.) tall in its native environment. In the U.S., rainbow eucalyptus grows in the frost-free climates found in Hawaii and the southern portions of California, Texas, and Florida. It is suitable for U.S. Department of Agriculture plant hardiness zones 10 and higher. In the continental U.S., the tree only grows to heights of 100 to 125 feet (30-38 m.). Although this is only about half the height it can reach in its native range, it is still a massive tree.

Can You Grow a Rainbow Eucalyptus?

Aside from climate, rainbow eucalyptus growing conditions include full sun and moist soil. Once established, the tree grows 3 feet (91 cm.) per season without supplemental fertilizer, although it needs regular watering when rainfall is insufficient. The most outstanding feature of a rainbow eucalyptus tree is its bark. The previous season's bark peels off in strips to reveal a brightly colored new bark below. The peeling process results in vertical streaks of red, orange, green, blue, and gray. Although the tree's color isn't as intense outside its native range, rainbow eucalyptus bark color makes it one of the most amazingly colorful trees you can grow. So, can you grow a rainbow eucalyptus? If you live in a frost-free area that receives ample rainfall, you probably can, but the real question is whether you should. Rainbow eucalyptus is a huge tree that is out of scale for most home landscapes. It can cause property damage as its raised roots break up sidewalks, damage foundations, and raise small structures such as sheds. The tree is better suited to open areas, like parks and fields, where it provides excellent shade as well as fragrance and beauty.

There are over 700 species of Eucalyptus, most of which are native to Australia, with a few in New Guinea and Indonesia. As such, the plants are suited for warmer regions of the globe and eucalyptus cold damage in trees grown in cooler zones is a common problem. Some varieties are more cold hardy than others, and eucalyptus cold protection can help the plants sustain less damage. Even if you choose a hardy specimen and protect it, however, you should still know how to fix cold damaged eucalyptus since weather can be surprising. Winter damage in eucalyptus can be mild or severe and needs to be triaged before treatment.

Recognizing Eucalyptus Cold Damage

The scent of the volatile oils in eucalyptus is unmistakable. These tropical to semi-tropical trees and shrubs are not used to freezing temperatures, which can cause considerable damage. The plants are adapted to moderate climates with little temperature fluctuation. Even endemic plants that grow where it snows are protected from huge spikes in temperature and hibernate under the snow until the growing season. Plants that experience big jumps or lows in temperature can be threatened with winter damage in eucalyptus. This occurs in regions like the eastern to central United States. Often, cold damage isn't recognizable until the thaw arrives. At this time you may begin to see blackened twigs and stems, rotten spots, broken plant material from heavy snow, and entire areas of the tree that are not leafing out. This indicates moderate to severe cold damage. In mature trees, the worst you may see will be a loss of leaves after a cold snap, but sustained cold followed by mild weather will cause dead stems and possible rot. Young plants have the worst time with cold periods, as they have not established a strong enough root zone and bark and stems are still tender. It is possible that the entire plant will be lost if the cold snap was long and cold enough.

Can Eucalyptus Survive Cold?

There are several factors that affect eucalyptus cold hardiness. First is the species cold hardiness as designated by the USDA or Sunset zones. The second is the seed provenance or where the seed was collected. Seed collected at higher elevations will pass on the trait of greater cold hardiness than those collected at lower zones. The type of freeze can indicate the hardiness as well. Plants that experience freezes with no snow cover and brisk winds desiccate and have root zone damage. Plants where heavy snow makes a blanket over the root zone and have minimal wind will have a greater chance of survival. Location, location, location. The site for the plant can help provide shelter for the plant and increase survival and vigor. So can eucalyptus survive cold? As you can see, this is a complex question and needs to be looked at from many sides and factors.

How to Fix Eucalyptus Cold Damage

Wait until spring and then cut off any damage or dead material. Double check to make sure the stems are dead with a “scratch test,” where you make a small wound or scratch in the bark to check for life underneath. Avoid radical pruning of eucalyptus, but once dead and broken material are removed, fertilize the plant and give it plenty of water over the growing season. In most cases, it will survive but you should think about eucalyptus cold protection for the next season.

Preventing Winter Damage in Eucalyptus

If you haven't already sited the plant in a sheltered area, you may want to think about moving it. Place the plant in a lea, the least windy side of a building and away from scorching winter sun. Place mulch thickly around the root zone with organic material, such as bark or straw. In areas with minimal wind, site the plant with an eastward exposure where daylight will warm the plant up after a freeze. Build a cold proof structure over the plant. Erect a scaffold and use a blanket, plastic or other cover to insulate the plant. You can even run Christmas lights under the cover to increase the ambient temperature and provide eucalyptus cold protection.

The word eucalyptus is derived from the Greek meaning "well covered" referring to the flower buds, which are covered with a lidded, cup-like, tough outer membrane. This membrane is flung off as the flower blooms, revealing the woody fruit containing many eucalyptus tree seeds. Let's learn more about how to grow eucalyptus from seed and other methods of eucalyptus propagation.

Eucalyptus Propagation

Native to Australia and encompassing over two-thirds of its land mass, eucalyptus is not only the koala's mainstay, but is known to control aphids and other insect infestations. Popular for its use in floral arrangements, eucalyptus propagation can be accomplished in several ways, with eucalyptus tree seeds being the most common and reliable method. Grafting and micro propagation are also used. Eucalyptus cuttings for propagation are a less than fool proof method, but some species take to this method better than others.

How to Grow Eucalyptus from Seed

Eucalyptus grows rapidly in poor soil conditions and readily reseeds itself in warmer climates. However, some types of eucalyptus require cold stratification, wherein the seed must be chilled to begin the process of germination. Varieties of eucalyptus which need to be cold stratified include:

• E. amygdalina
• E. coccifera
• E. dalrympleana
• E. debeuzevillei
• E. delegatensis
• E. dives
• E. elata
• E. fastigata
• E. glaucescens
• E. goniocalyx
• E. kybeanensis
• E. mitchellana
• E. niphophila
• E. nitens
• E. pauciflora
• E. perriniana
• E. regnans
• E. stellulata

To cold stratify eucalyptus tree seeds, mix together 1 teaspoon (5 ml.) of seeds to 2 to 3 tablespoons (30-44 ml.) of filler such as perlite, vermiculite, or sand. Dampen the mixture, put in a zip-lock bag labeled and dated, and place in the refrigerator for four to six weeks. After that time, you may sow the seeds including the inert filler. So now, how to grow eucalyptus from seed? Sow eucalyptus tree seeds in the spring (late spring in some climates) in flats of pasteurized soil medium placed in a shady area and covered with white plastic. Once some maturity has been achieved, transplant to small pots and then again upon maturation into a prepared garden row. Of course, the eucalyptus tree seeds may also be directly sowed into the container in which the plant will continue to grow.

Starting Eucalyptus Trees from Cuttings

Growing eucalyptus from seed is the easiest route to propagation, however, some brave souls have been known to attempt eucalyptus propagation from rooting eucalyptus cuttings. Rooting cuttings is a bit more difficult to achieve unless one uses mist propagation units or micro propagation facilities. For the intrepid gardener, however, the following are instructions for rooting eucalyptus cuttings:

• Choose 4 inch (10 cm.) long mature shoots during June/July and dip the bottom tips of the cuttings in rooting hormone for about 30 seconds. Eucalyptus cuttings should have at least one budding leaf but if it has sprouting leaves, break these off.
• Fill a pot with perlite and position the cuttings down into the medium with the rooting hormone end covered. Allow the pot to absorb water until moistened through its bottom hole set into a saucer filled with water and then cover the pot with a plastic bag and place in a warm location.
• Rooting eucalyptus cuttings for propagation should remain in temperatures about 80 to 90 degrees F. (27-32 C.). Keep moist and hopefully after four weeks or so your cuttings will have rooted and will be ready for transplanting.

Good luck!

Problems with eucalyptus trees are a fairly recent occurrence. Imported to the United States around 1860, the trees are native to Australia and up until 1990 were relatively pest and disease free. Today, people are seeing more problems with their eucalyptus bushes. Disease and pests are causing everything from leaf drop to eucalyptus trees splitting and dying.

Common Problems with Eucalyptus Trees

Most eucalyptus tree problems occur when the tree is stressed. This can be the result of disease or insects.

Diseases of Eucalyptus

Fungi, in particular, find an easy foothold in trees already damaged by age or insects. There are several fungi that can cause eucalyptus tree diseases. The most common are presented here. 

Canker, caused by a type of fungus, begins by infecting the bark and proceeds to the interior of the tree. Leaves turn yellow and drop, and it is common to see eucalyptus trees dropping their branches as the disease takes hold. When canker attacks the trunk, the result will eventually be the eucalyptus trees splitting along their trunks or, if the canker girdles the trunk, strangling the eucalyptus tree. Problems with canker are also found in eucalyptus bushes. Disease moves quickly from branch to branch until the bush can no longer nourish itself. 

Problems with another fungus, Phytophthora, are also becoming more common. Known as root, collar, foot, or crown rot, the disease shows itself first through discolored leaves and red-brown or dark brown wood directly beneath the bark. 

Heart or trunk rot is a fungus that destroys the tree from the inside out. By the time the eucalyptus tree's drooping branches are discovered, the tree is already dying. There is little to be done for eucalyptus tree diseases these fungi cause. Preventing the spread of disease should be a priority. Burn all damaged wood immediately and disinfect any equipment used.

Eucalyptus Tree Pests

Insect pests may attack trees and eucalyptus bushes. Disease or weakness of any kind are open invitations for pests to invade. The red gum lurp psyllid are recognized by the little white houses (lurps) they secrete over themselves for protection. They also secrete a sticky honeydew that often becomes so thick it drips from the branches. 

A large infestation can cause enough stress to cause leaf fall and attract the eucalyptus long-horned borer. Female borers lay their eggs on stressed trees and the resulting larvae burrow to the cambium layer. These larval galleries can girdle a tree, disrupting water flow from the roots and killing the tree within weeks. As with fungi, there is little to be done to combat these eucalyptus tree problems except to remove and destroy damaged wood. 

Keeping your trees healthy is the best way to confront problems with eucalyptus trees and eucalyptus bushes. Disease and pests are usually opportunistic and invade where stress is present. Prune heavily and destroy all wood at the first sign of infection, and hope for the best.

Eucalyptus is a tree most often associated with its native Australia environment and fun-loving koalas feasting on its branches. There are many species of eucalyptus trees, including popular varieties like Gum tree and Silver-Dollar tree, that can be grown in the home landscape. In fact, this tree can make an attractive addition with interesting bark and foliage, beautiful flowers, and nice fragrance. They do especially well in areas that mimic their native environment. Most of these trees are rapid growers, reaching heights of about 30 to 180 feet (9-55 m.) or more, depending on the variety, with approximately 60 percent of their growth established within the first ten years.

Tips on Growing Eucalyptus Trees

All eucalyptus trees require full sun, however, some species, like E. neglecta and E. crenulata, will tolerate areas with semi-shade. They also adapt well to a wide range of soils, from hot, dry sites to slightly wet as long as the area is well draining. Plant eucalyptus in mid to late spring or fall, depending on your location and climate. Be sure to water the tree both before and after planting. Dig the hole slightly larger than the root ball, and take care with the tree's roots during planting, as they do not like being disturbed. There's no need to spread out the roots while planting, as this could damage their sensitive root system. Back fill the area and lightly tamp the soil to remove any air pockets. According to most eucalyptus tree information, many species respond well to potted environments as well. Ideal candidates for containers include:

• E. coccifera
• E. vernicosa
• E. parviflora
• E. archeri
• E. nicholii
• E. crenulata

Containers should be large enough to accommodate the tree, about 2 feet (61 cm.) in diameter, and allow for adequate drainage. Eucalyptus trees cannot take temperatures below 50 degrees F. (10 C.) for extended periods, therefore, it's recommended that they be grown indoors in cold climates, spending summers outside whenever warm enough. Other areas can either overwinter them indoors or provide suitable winter protection.

How to Care for a Eucalyptus Tree

Eucalyptus tree care is not difficult, as this type of tree usually maintains itself reasonably well. Once established, eucalyptus trees should not require too much watering, with exception for those growing in containers. Allow these to dry out somewhat between waterings. Additional watering may be necessary during periods of excessive drought, however. As for fertilizer, much of the eucalyptus tree information recommends against the use of fertilizer, as they do not appreciate phosphorus. Potted eucalyptus may require an occasional slow-release fertilizer (low in phosphorus). In addition, eucalyptus tree care includes annual pruning (in summer) to control top growth and their overall height. Eucalyptus trees are also known to produce heavy litter in the fall, shedding bark, leaves, and branches. As its shred-like bark is considered flammable, keeping this debris cleaned up is preferable. If desired, you can collect some seed once it falls, and then plant it in another area of your yard or in a container.

Eucalyptus tree plants are well known for their rapid growth, which can quickly become unmanageable if left unpruned. Pruning eucalyptus not only makes these trees easier to maintain, but it also can reduce the amount of leaf litter and improve their overall appearance. Keep reading to learn more about how to prune a eucalyptus tree.

When to Cut Eucalyptus

While many people assume fall to early spring is an appropriate time for eucalyptus trimming, this isn't the case at all. In fact, pruning too near the onset of cold weather or post freezing temperatures can trigger dieback and encourage disease. The best time for pruning eucalyptus is during the heat of summer. Although some bleeding of sap may occur, these trees actually heal quicker in hot weather. For large wounds, however, applying a wound dressing may be necessary after cutting to prevent infection. Also, you may want to avoid cutting eucalyptus tree plants during excessively humid conditions, as this can leave them susceptible to fungal infections, which are most prevalent under these conditions.

How to Prune Eucalyptus Tree

There are several methods for pruning eucalyptus, depending on your needs and the species grown. This includes the following:

• Hedge pruning is a suitable method for species like E. archeri, E. parviflora, E. coccifera, and E. suberenulata. In order to shape these trees into hedges, prune them at the end of their second season, removing about a third of the height and cutting in a pyramid shape. Continue to remove about one-quarter of the tree the following year and thereafter in the same manner.
• Specimen pruning helps keep eucalyptus looking attractive when used as a focal point in the landscape. Do not cut any lower branches for the first 6 feet (2 m.). Instead, wait until the tree has at least two season's growth. Keep in mind that many of the faster growing species will actually shed lower branches on their own.
• Coppicing is another method of eucalyptus pruning to help control the tree's height. With this method, slightly angle the cuts, pruning back about 12 to 18 inches (31-46 cm.) from the ground and removing all side shoots. For unsightly or leggy growth, cut back to about 6 inches (15 cm.) from the ground. Select the best looking shoot and allow this to develop, cutting all others.
• Pollarding encourages branching at the tops of trees and lower height. This pruning is recommended for trees that are at least three to six years old. Cut eucalyptus tree trunks about 6 to 10 feet (2-3 m.) from the ground, leaving the side branches.