Dogwood Tree Diseases Bark

Dogwood anthracnose discula anthracnose.

Dogwood tree diseases bark. Fungal growth appears on the. Dogwood trees suffer from a variety of diseases and conditions most of which result in only cosmetic damage. The disease appears as small leaf spots surrounded by a purple border and or large tan spots on the leaf margins. One of the very common diseases of dogwood trees is the dogwood anthracnose which is caused by the fungus discula sp.

Fungi are the main causes of dogwood tree diseases. Numerous small shoots may grow from the trunk. The initial symptoms appear as medium to large purple bordered leaf spots and scorched tan blotches. The infected bark begins to discolor and sap or resin oozes out of it.

The infection is manifested in the form of leaf spots and stem cankers. Dogwood cankers are commonly found on the main trunk area. Fungal diseases can ruin the look of the tree and in the worse cases the tree will not survive. It is caused by the canker fungus that spreads inside the bark sucking away the bark s nutrition.

Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet. Insects invade the rough areas. On affected trees leaves remain on the tree throughout winter. Rake and destroy fallen leaves.

A particular kind of canker disease called the diffuse canker is typical to dogwoods. Dogwood tree bark is peeling due to disease dogwood anthracnose is a common disease in the cornus genus. Protect trees from drought stress winter injury and dogwood borer attack. Canker disease generally appears as sunken areas filled with dead tissue on the dogwood s bark.

Florida are resistant to anthracnose and decline and should be used to replace dying trees. The shoots are also killed in this disease. The most serious but rare trunk canker among dogwoods is caused by the phytophthora fungus. The disease discula destructiva causes leaf twig and branch dieback beginning in the lower part of the tree.

This is a relatively new disease of dogwood in south carolina and it is caused by the fungus discula destructiva. Dogwood canker is another disease that causes cankers on the dogwood s bark. Apply a fungicide during bud break to protect new flowers twigs and foliage. It causes yellow leaves and twig dieback as well as sunken discolored areas of tissue.

These are common symptoms of branch and crown canker as well. It affects the trunk and the larger branches. The canker shows up as rough areas. Kousa and hybrids of kousa and native dogwood c.