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Why are my willow branches turning black?

Author

Noah Mitchell

Published Jan 06, 2026

Willow scab is a fungal disease that causes leaf symptoms, followed by brown spore masses at the base of leaves. The symptoms of scab on willow start with dark spots on the leaves. These can be brown or black, and cause the leaves to wilt, shrivel up and die.

How do you treat black canker on willow?

Black canker treatment includes pruning and spraying with fungicides. You can't cure existing cankers with fungicide, but you may be able to prevent reinfections. Treat nearby trees as well to prevent them from becoming infected. Spraying should be carefully timed.

How do you know when a willow tree is dying?

Look for signs of decay and uprooting at the base of the tree, where the trunk rises from the ground. Soft, rotting wood and an abundance of bored insect holes around the base signals a dead weeping willow tree.

Should I cut dead branches off my willow tree?

Weeping willow pruning is also necessary after a storm. Trim off any branches that are split or damaged with a pruning saw. Make the cut just below the break. If you see any dead wood, trim back the limbs until only living tissue remains.

How do you revive a dying willow tree?

Remedy root rot by increasing soil drainage. While weeping willow trees enjoy moist soil, soggy conditions can cause rot that leads to their decline. To make watering and mulching safer, add organic matter to the soil, let rainfall perform most of the tree's irrigation and water several feet away from the tree trunk.

29 related questions found

What is wrong with my willow tree?

Disease and pest issues

Weeping willows are susceptible to willow scab, willow blight, black canker, fungi, powdery mildew, root rot, and more. Pest issues include aphids, gypsy moths, and borers. Targeted spraying can help alleviate this issue.

What is killing my weeping willow?

Weeping willows are susceptible to many fungal diseases and a few bacterial diseases, but only cotton root rot ordinarily causes them to die within hours or days. Cytospora canker (Cytospora chrysosperma), crown gall (Agrobacterium tumefaciens) and a deficiency of iron can also kill weeping willow.

What do you do with dead willow branches?

Once the willow tree matures its drooping fronds can touch the ground and can be pruned to allow a clearing under the tree if desired. Dead or broken branches are removed during tree pruning. Any suckers, growing from the soil floor to the trunk, stress the tree and need to be removed.

When should willow trees be trimmed?

Willow trees bleed sap if you prune them while they are actively growing, so the best time for willow tree pruning is in winter while the tree is dormant.

Do willow trees grow back?

Water has flooding, freezing over and icing up on banks and other destructive events. Plants that do well in this zone need to adapt to getting sheered at the base. Willows do this in multiple ways. They re-sprout readily to make up for no stems.

What is the lifespan of a weeping willow tree?

Weeping willows are fast-growing trees, adding up to 10 feet per year when young, but their average lifespan is a relatively short 30 years.

Why is my weeping willow tree losing leaves?

Leaf drop can occur on trees that have been exposed to prolonged wetness in heavy, clay soils. Some tree species like wet soils but not prolonged wetness without drainage. If trees are exposed to continual wetness, their roots can become diseased and cause the leaf drop.

How long does a willow tree live?

Willow trees tend to start to fall apart around 20 years of age. It is possible to have them reach 50 years with proper care. When they have lived their lifespan, you should have the trees removed to keep up on a healthy ecosystem.

How do you treat black fungus on trees?

Prune out all infected branches in late winter (late February through the end of March) and destroy them by burning, burying, or throwing them away. Remove at least 3-4 inches of healthy tissue below each knot to ensure elimination of the fungus.

Why are my trees turning black?

Hot Weather and Drought – During times of drought, trees are more susceptible to being damaged by radical changes in temperature. Sudden rises in temperature can leach the moisture out of your trees and cause its leaves to wither, brown, and blacken.

Can I trim back a weeping willow tree?

Trimming it back in the winter also gives the tree a chance to recover before the spring showers arrive and the optimal growing season. Weeping Willows can be pruned back as late as March but you'll greatly slow down it's growth for that year if you prune the tree when it's not dormant.

Can you cut back a weeping willow tree?

When is the best time to carry out weeping willow tree pruning? The weeping willow tree should only be pruned during late winter to early spring when the tree is in its dormant period. This is because willow trees, like most trees, bleed sap if they are pruned during their active growth period.

How do you prune a willow bush?

For these plants, pruning should be done in the early spring, before they leaf out. Shear or prune the outer branch tips to shape and reduce the size of the plant. Repeat this pruning technique throughout the summer, as needed. As the plant matures, renewal pruning will be needed.

Why is my weeping willow turning black?

Willow scab is a fungal disease that causes leaf symptoms, followed by brown spore masses at the base of leaves. The symptoms of scab on willow start with dark spots on the leaves. These can be brown or black, and cause the leaves to wilt, shrivel up and die.

How do you keep a weeping willow healthy?

Leave a 3- to 4-inch space between the trunk and the mulch. Water your weeping willow regularly during dry weather if it isn't near a pond, creek or other consistent water source. Keeping the soil moist, but not soggy, at all times results in the tree's best growth.

What is the best fertilizer for weeping willow trees?

A balanced fertilizer with an equal ratio of nitrogen, phosphorus and potassium, such as a 20-20-20 formula, is appropriate for a weeping willow. The nitrogen supports foliage growth on the tree's long, weeping branches, while the phosphorus supports the growth of roots, stems and flowers.

Why is my willow bush dying?

If you have not sited your tree or provided care appropriately, you can expect willow issues. In addition, prolonged heat, poor drainage, prolonged lack of water, and heavy, compacted clay soil can cause serious problems.

Is there a difference between a willow and a weeping willow?

While some smaller shrub willows grow well in mass plantings as hedges and borders, weeping willows prefer open areas that provide an abundance of light, although they can grow in very light shade.

Can you grow a willow tree from a branch?

However, the willow is very easy. To start a new tree from the stem of a willow tree, take a healthy branch, place it in moist soil in the spring or late winter. If the soil remains moist, the stem should form roots in a month or so and by the end of the growing season will have a good root system.

What does a weeping willow tree symbolize?

It's a symbol of fertility and new life, a willow branch can be planted in the ground and from it, a new tree will grow in its place. Its ability to grow and survive is powerfully symbolic and show how we can thrive even in challenging conditions.