Dogwood Tree Diseases Anthracnose

Florida are resistant to anthracnose and decline and should be used to replace dying trees.

Dogwood tree diseases anthracnose. Sycamore oak especially white oaks maple ash walnut and dogwood are especially vulnerable to anthracnose which may cause leaf and shoot blight defoliation and twig dieback. Dogwood anthracnose is a problematic disease that all dogwood owners must take seriously. The early symptoms begin in mid to late may as leaf spots with tan or purple borders. Dogwood anthracnose discula anthracnose.

The infection is manifested in the form of leaf spots and stem cankers. Dogwood anthracnose infects flowering cornus florida and pacific dogwoods c. One of the very common diseases of dogwood trees is the dogwood anthracnose which is caused by the fungus discula sp. In the past anthracnose was the most serious disease of dogwoods in the landscape and our forests but it is now less common.

Kousa is also susceptible to infection but is highly resistant to the disease and typically suffers only minor leaf spotting. Protect trees from drought stress winter injury and dogwood borer attack. Dogwood anthracnose discula destructiva is a damaging disease that attacks various species of dogwoods. It is caused by the discula fungus.

In wet weather these spots can rapidly enlarge and kill the entire leaf. It causes dieback or even death of infected trees. Dogwoods are extremely common in landscapes around the area which causes this disease to spread easily throughout landscape dogwoods and cause disfigurement of foliage each year. The initial symptoms appear as medium to large purple bordered leaf spots and scorched tan blotches.

Anthracnose disease spreads very quickly and it is critical to identify it during its nascent stage. Rake and destroy fallen leaves. The fungi that cause it mostly from the family gnomoniaceae vary depending on the tree species. Anthracnose is a term applied to an array of fungal diseases that affect shade trees.

Apply a fungicide during bud break to protect new flowers twigs and foliage. Anthracnose can affect the buds of a tree early in the season before it has grown any leaves. Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet. Shade trees commonly affected by anthracnose are ash dogwood elm hickory maple oak sycamore and walnut.

Kousa and hybrids of kousa and native dogwood c. This disease propagates quickly in cool slightly wet conditions that are associated with the late spring and fall season. This is a relatively new disease of dogwood in south carolina and it is caused by the fungus discula destructiva. The anthracnose disease affects flowering varieties of dogwoods like the pacific dogwood.