Dogwood Tree Diseases Bark

The initial symptoms appear as medium to large purple bordered leaf spots and scorched tan blotches.

Dogwood tree diseases bark. The shoots are also killed in this disease. Dogwood anthracnose discula anthracnose. Other avoidable diseases include leafspot and sun scorch which occur when this understory tree is planted in full sun. These are common symptoms of branch and crown canker as well.

Dogwood canker is another disease that causes cankers on the dogwood s bark. Dogwood anthracnose canker this is a serious fungal disease of dogwoods that is prevalent in states east of missouri. Numerous small shoots may grow from the trunk. The most serious but rare trunk canker among dogwoods is caused by the phytophthora fungus.

It is caused by the canker fungus that spreads inside the bark sucking away the bark s nutrition. The canker shows up as rough areas. It causes yellow leaves and twig dieback as well as sunken discolored areas of tissue. 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. The infection is manifested in the form of leaf spots and stem cankers. The disease discula destructiva causes leaf twig and branch dieback beginning in the lower part of the tree. A particular kind of canker disease called the diffuse canker is typical to dogwoods.

Fungal growth appears on the. This is a relatively new disease of dogwood in south carolina and it is caused by the fungus discula destructiva. Fungal diseases can ruin the look of the tree and in the worse cases the tree will not survive. Fungi are the main causes of dogwood tree diseases.

It affects the trunk and the larger branches. Rake and destroy fallen leaves. On affected trees leaves remain on the tree throughout winter. Protect trees from drought stress winter injury and dogwood borer attack.

The infected bark begins to discolor and sap or resin oozes out of it. Apply a fungicide during bud break to protect new flowers twigs and foliage. Kousa and hybrids of kousa and native dogwood c. Canker disease generally appears as sunken areas filled with dead tissue on the dogwood s bark.

Dogwood tree bark is peeling due to disease dogwood anthracnose is a common disease in the cornus genus. Insects invade the rough areas. Some are caused by improper care such as water stress resulting from inadequate irrigation during dry periods. Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet.