10 Plants That Thrive in Terracotta Pots – and the Much-Loved Ones That Fail

Terracotta pots not only bring classic good looks to your patio but provide growing conditions that help some plants flourish and cause others to fail. So, if you’re choosing planters on looks alone, listen up! Pair the right plants with terracotta rather than plastic, resin or ceramic pots, and they’ll be happier and healthier, rewarding you with more flowers and foliage. And once you know which popular plants detest growing in clay containers, you'll avoid unnecessary patio-pot deaths, too.

You see, terracotta clay is breathable, rather like your fancy Gore-Tex jacket that lets moisture escape when you work up a sweat. Terracotta works like a membrane between the potting mix and the air, drawing excess water outwards to ensure the soil never sits soggy. There's another factor that's vital to successful container gardening, too: as well as being porous to allow moisture out, terracotta lets air in. Almost all plants have respiring roots that must continuously consume oxygen to survive, just like us humans. Some plants need more airflow than others, so really benefit from a clay container's breathable sides.

It just so happens that most plants that evolved to flourish in a dry, fast-draining environment also like well-aerated soil packed full of oxygen – and it’s no coincidence, as the more moisture sits in the soil, the less room there is for oxygen. So, pair those plants with terracotta pots and hey presto, you have containers brimming with healthy growth.

All these 10 plants grow far better in terracotta containers than they do in suffocating plastic, resin or ceramic pots. Give yours a clay-based home before fall rain arrives and they'll survive winter far better for stronger plants and more abundant blooms and leaves next year.

1. Thyme

If you're growing thyme in a patio pot, know that it will do far better in a terracotta pot that removes dampness from the soil to create the dry, fast-draining conditions that this flavorful herb loves. Mimicking the plant's native Mediterranean habitat, the clay walls wick excess moisture away, which is vital as thyme is highly susceptible to root rot if it sits in soggy soil. There's a benefit for you, too, as these quick-drying conditions concentrate the thyme's essential oil production, resulting in tastier, more fragrant leaves for cooking.

2. Lavender

While modern hybrid varieties have been bred to better withstand high rainfall and resist root rot, all lavenders do best in well-draining soil so love life in a terracotta pot. Move your lavender from a plastic or ceramic pot to a terracotta one and you'll quickly realise there's a world of difference between surviving and thriving. Add a couple of handfuls of coarse horticultural sand like this from Amazon to the potting soil and treat your lavender plant to a gravel mulch, and you’ll heighten the benefits of that porous, breathable container. Choose the exact right lavender for your zone, too, and you can look forward to incredibly abundant, highly fragrant patio pots.

3. Hardy Succulents

If you’re a fan of hardy succulents like Sempervivum (houseleeks), Sedum (stonecrop) and Delosperma (ice plants), then growing them in terracotta pots will make these low-maintenance lovelies even easier to look after. The sun-loving plants need fast-draining soil to thrive, so really appreciate the moisture control a porous clay container brings. As they only need irrigating when soil is fully dry from May to September, and prefer to be kept even drier through winter, housing them in terracotta pots makes it easy to avoid the damp conditions that lead to an untimely death. And nine times out of 10, it's the wetness of winter rather than the cold that kills these drought-adapted darlings.

4. Rosemary

This woody herb evolved in the rocky, dry environment of Mediterranean hillsides so it's naturally suited to the aerated, well-drained soil a terracotta pot provides. Good drainage helps rosemary survive winter, too, as its roots quickly rot in soggy soil, a real danger when growing herbs in wetter zones. Practicalities aside, the pairing of cool blue rosemary blooms with the warm hues of a terracotta pot is just divine, especially if you have a trailing variety like blue cascade rosemary, available from Nature Hills, with stems that spill oh-so-stylishly over the rim.

5. Bird of Paradise

Sterlitzia has exceptionally strong, fleshy, active roots that consume high levels of oxygen, so housing bird of paradise plants in terracotta pots where they'll benefit from the clay’s breathability is a smart move. That epic root system supports huge sail-like leaves, so the weight of a terracotta planter is also a wise precaution. Growing these tropical plants that are only reliably hardy in zones 10+ in a container also makes it easy to overwinter them indoors as houseplants, where their epic evergreen leaves make quite a statement.

While bird of paradise appreciates a thorough watering, the plant likes the soil to dry out in between, and terracotta accelerates this process. Do choose a sturdy pot though, as these roots are powerful enough to break through a flimsy planter.

6. Agapanthus

Another plant with a heap of flower power and a hefty root system to fuel it is agapanthus, also called African lily and lily of the Nile. This beauty also has a high root respiration rate so benefits from the breathability of a terracotta pot and the oxygenated soil it brings. While you will need to keep agapanthus growing in a clay container well watered over summer, you'll reap the rewards of that fast drainage for the rest of the year as its roots hate to sit in waterlogged soil.

Make sure you plant agapanthus in a straight-sided terracotta pot or a classic design with sides that taper outwards though, as its enthusiastic root system will expand to fill every inch of the planter; if the container curves inwards at the rim, you won’t be able to remove the plant when it’s time to repot. You needn’t be in a rush to move lily of the Nile up a pot size, however, as this plant blooms far more profusely when its roots are constricted.

7. Pelargoniums

Terracotta pots are a natural match for all pelargoniums (sometimes called tender geraniums) whether you like to grow zonal, ivy-leaved, scented-leaved or regal types. These glorious plants need fast drainage and good airflow around their roots, and poor aeration is a prime reason they fail – though forgetting to bring the tender plants in out of the cold comes a close second! But even then, growing a pelargonium in a stylish terracotta pot means you can easily bring it indoors for the winter, where it'll make a handsome houseplant.

8. Cacti

Cacti need even more airflow around their root balls, so also do best in terracotta pots. Because they’ve evolved to live in such a dry environment, cacti are highly sensitive to a lack of oxygen in the soil. Waterlogged soil effectively suffocates roots by excluding oxygen, and quickly causes irreversible damage to their hyper-sensitive surface cells. While most plants can deal with a short-term lack of oxygen, cacti quickly struggle, so a breathable container that helps to control moisture levels is a real asset. Standing the terracotta pot on a little pea gravel or pot risers helps to keep the drainage hole unobstructed, too.

9. Santolina

Lavender cotton brings cushions of fragrant foliage and cheery yellow flowers to a patio pot, and this low-maintenance plant will be all the happier if that container is made of clay. Another Mediterranean native, Santolina chamaecyparissus evolved to grow in dry, stony soil so benefits from a terracotta pot’s breathability. Santolina actually performs better under mild moisture stress, so the fluctuating conditions inside a clay container actively help it flourish. Adding a few handfuls of perlite, available from The Home Depot, to the potting mix will improve drainage and aerate soil some more, for showstopper results.

10. Rockrose

With its beautiful rose-like blooms, Cistus is another Mediterranean shrub with a high demand for oxygen and low tolerance for soggy soil, so does far better in a terracotta pot. Even a compact dwarf rockrose can get a little top-heavy, so the weight of a clay pot prevents the plant being blown over, too.

Terracotta Pots that Don’t Bust the Budget

Choose the Right Terracotta Pot

• Depending on your zone and what you’re planting in them, check if your planter needs to be frost-proof. Because of its porous nature, clay holds water which can freeze and crack. Terracotta that’s frost-proof is typically fired at a higher temperature, and its winter weather resistance should be outlined in the product description.
• There’s no need to pay more for a frost-proof pot if you’re matching it with a tender plant that needs to overwinter indoors or in a sheltered spot. Simply stand the pot on a wheeled dolly such as this plant caddy from Ace Hardware that makes moving it easy.
• If you choose a planter for its porosity and breathability because you're growing plants that thrive in terracotta pots, don’t pick a design that’s glazed. The hard glaze forms an impenetrable layer over the terracotta that neither air nor moisture can pass through.
• Sitting your terracotta pot on a set of risers such as these Pot Toes from Amazon through fall and winter allows the drainage hole to drain freely and ensures the clay container doesn’t sit in pooling water.

What Not to Plant in Terracotta Pots

Terracotta containers don’t make good homes for all plants, and these in particular will suffer in a clay pot:

• Moisture-loving plants such as hydrangeas and hostas, which appreciate more consistent water levels in the soil.
• Acid-loving plants such as camellias, azaleas or rhododendrons, as the alkaline clay can change the pH of the compost over time.