By Bonnie L. Grant
Frizzle top is both the description and name of a common palm problem. Preventing frizzle top is a little tricky, but the extra care will help preserve the beauty of your palms. Keep reading to discover exactly what is frizzle top on palm trees and how to treat it.
What is Frizzle Top?
What is frizzle top? It is a disease of palm trees, which is caused by manganese deficiency. Frizzle top on palm trees is most common on Queen and Royal palms, but other species, including sagos, may also be affected. Coconut palms exhibit problems after periods of cold. Cold temperatures minimize the effectiveness of roots to draw manganese into the tree’s vascular system. Early diagnosis will enhance frizzle top treatment to preserve the plant’s health. The symptoms are most obvious in winter and spring, because the roots are not as active. This prevents the plant from gathering maximum nutrients, including any available manganese.
Palm Frizzle Top Symptoms
Palm fronds will exhibit dry, withered leaves. Areas where the soil has a high pH are most likely to have palms with crispy fronds. At its earliest appearance, frizzle top will attack the young leaves as they emerge. Any new growth that does occur is limited to stubby petioles that do not grow terminal leaf tips. The disease causes yellow streaking and weak growth. Leaves on palms get necrotic streaking which affects all parts of the leaves except the base. Overall, the leaves will become yellow and tips fall off. The entire frond is eventually affected and will distort and curl. In some species the leaf tips fall off and leave the plant looking scorched. Frizzle top on palm trees will eventually cause the death of the tree if left unchecked.
Preventing Frizzle Top
One way of preventing frizzle top is to use a soil test kit prior to planting any new palm trees. This can help you gauge if there is adequate manganese in your soil. Alkaline soils are most likely to have low available levels of the nutrient. Creating a more acidic site by adding sulfur to the soil is a first step in preventing frizzle top. Apply one pound of Manganese Sulfate every September to prevent problems in your palm tree.
Frizzle Top Treatment
A consistent fertilizing program is the best way to minimize palm frizzle top symptoms. Use a water-soluble form of manganese fertilizer as a foliar drench. Apply it according to the instructions every three months. Average application rates are three pounds per 100 gallons of water. This short-term “cure” will help keep new emerging leaves green. A program of manganese rich soil fertilizer will help in the long term. Keep in mind that visual improvement will be slow. Fronds already damaged by palm frizzle top will not turn green again and need to be replaced by healthy foliage. This renewal could take several years, but if you are faithful to a manganese fertilizer schedule, the recovery will take place and ensure a healthy landscape tree.