Dogwood Tree Diseases Bark

One fungal infection in particular dogwood anthracnose or black stem disease can destroy dogwood trees.

Dogwood tree diseases bark. Eventually as with other cankers the cankers grow around the entire trunk and kill the tree. The most important step in dogwood crown canker treatment is prevention. Crown canker phytophthora cactorum is the most serious disease of flowering dogwoods in the eastern united states. This disease is caused by the fungus elsinoe corni one of the most common leaf diseases of flowering dogwoods.

An early symptom may be the sloughing of loose bark. Treating dogwood bark disease treat diseases with the appropriate fungicide. Weakened trees are more susceptible. Any dogwood tree bark problems that cause a break in the bark can allow in the disease.

Symptoms are small inch tan spots with reddish purple borders. The flower bracts are usually attacked first and then the leaves young shoots and fruit of dogwoods primarily during wet spring weather. The plant appears stressed especially during dry periods. Protect trees from drought stress winter injury and dogwood borer attack.

One of the very common diseases of dogwood trees is the dogwood anthracnose which is caused by the fungus discula sp. Prune and destroy dead twigs and branches during dormancy and when observed during the growing season. The larvae of a clear wing moth this caterpillar tunnels into the trunk of the tree and eventually girdles the tree. Dogwood cankers are commonly found on the main trunk area.

It is caused by the canker fungus that spreads inside the bark sucking away the bark s nutrition. Canker disease generally appears as sunken areas filled with dead tissue on the dogwood s bark. A particular kind of canker disease called the diffuse canker is typical to dogwoods. The most devastating borer of dogwoods is the dogwood borer synanthedon scitula.

As with many other canker diseases crown canker of dogwood often enters through wounds on the base of the tree. Dogwood canker is another disease that causes cankers on the dogwood s bark. The shoots are also killed in this disease. The most serious but rare trunk canker among dogwoods is caused by the phytophthora fungus.

Dogwood tree bark disease canker disease. Later twigs and branches may die usually on one side of the tree but the disease spreads over time. Leaves are small or undersized and of a lighter green color and may curl. The initial symptoms appear as medium to large purple bordered leaf spots and scorched tan blotches.

Caused by the fungus discula destructive dogwood anthracnose attacks the tree causing masses of. Rake and destroy fallen leaves. Apply a fungicide during bud break to protect new flowers twigs and foliage.