Dogwood Tree Bark Fungus

Lichen on tree bark is completely harmless to the tree itself.

Dogwood tree bark fungus. There are several types of fungus that can be found on different trees. The shoots are also killed in this disease. Kousa and hybrids of kousa and native dogwood c. A particular kind of canker disease called the diffuse canker is typical to dogwoods.

Eventually the disease spread throughout the appalachian mountains west virginia virginia and maryland. Dogwood anthracnose is caused by discula destructiva a fungus that was first noted in the 1970s in pennsylvania and new york. Insects such as dogwood borers twig borers and dogwood club gall midges are able to cause serious damage to an already stressed tree. It was first noted in north carolina in 1987.

The first symptoms of dogwood anthracnose are. One of the very common diseases of dogwood trees is the dogwood anthracnose which is caused by the fungus discula sp. The most serious but rare trunk canker among dogwoods is caused by the phytophthora fungus. The fungus grows on the tree and can collect moisture which the algae needs.

The initial symptoms appear as medium to large purple bordered leaf spots and scorched tan blotches. Protect trees from drought stress winter injury and dogwood borer attack. Rake and destroy fallen leaves. Florida are resistant to anthracnose and decline and should be used to replace dying trees.

Crown canker is a fungal disease that attacks flowering dogwood trees. For more information on crown canker on dogwood trees read on. It is caused by the canker fungus that spreads inside the bark sucking away the bark s nutrition. The algae in return can create food from the energy of the sun which feeds the fungus.

Dogwood anthracnose discula anthracnose. This is a relatively new disease of dogwood in south carolina and it is caused by the fungus discula destructiva. The infection is manifested in the form of leaf spots and stem cankers. Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet.

The rhizines similar to roots allow them to attach to the but do not go deep enough to harm the tree in any way. Dogwood anthracnose caused by the fungus discula destructive dogwood anthracnose attacks the tree causing masses of spores to appear on the bark. Apply a fungicide during bud break to protect new flowers twigs and foliage. The main signs are rot on the truck of the tree which can mess up its structural integrity.

Other symptoms of fungal infection include sunken areas on parts of the tree s bark and discoloration on the bark. Dogwood cankers are commonly found on the main trunk area. It can kill the trees it attacks or can leave them vulnerable to lethal attack by other pathogens.