Dogwood Tree Leaf Problems
Cercospora and septoria leaf spot caused by the.
Dogwood tree leaf problems. These gradually extend to the trunk of the tree with necrotic weeping areas. Shrubby dogwoods grown for their winter stem colour cornus alba c. Kousa and hybrids of kousa and native dogwood c. Mechanical injuries are most commonly caused by lawn mowers or string trimmers.
Controversa the wedding cake tree c. Other problems poor leaf color unhealthy plant growth twig dieback and even tree death are typical symptoms of distressed dogwoods. Dogwood leaf scorch leaf scorch is a common problem in dogwood tress and a sign that your tree is under water stress. Dogwood anthracnose is one of the most common fungal diseases to attack this plant.
Dogwood anthracnose canker this is a serious fungal disease of dogwoods that is prevalent in states east of missouri. Caused by the fungus discula destructiva anthracnose thrives in moist shade. Numerous small shoots may grow from the trunk. A number of factors other than insects or diseases can contribute to the decline of dogwoods in the landscape especially mower injury over fertilization and poor growing conditions.
While kousa dogwoods are prized for their ability to resist many dangerous dogwood diseases they are still susceptible to infectious problems. Leaf and flower blight irregular brown wrinkled patches form on flower bracts and leaves in the spring. Sanguinea cvs are unfussy about their soil conditions but they are able to thrive in damp conditions where other shrubs might fail. Florida are resistant to anthracnose and decline and should be used to replace dying trees.
It is essential to determine the cause and preserve the energy gathering foliage. Dogwood anthracnose is the most common disease that affects dogwood trees. Alternifolia the pagoda dogwood c. Dogwood leaf drop is not only an unsightly problem but it can spell doom for a plant due to reduced vigor.
Mas the cornelian cherry and c. In case of a mechanical injury remove the dead tissue with your fingers. Failure to provide these conditions will encourage disease and pest problems. Do not pull off the bark or any other intact part of the tree around the infected area.
Officinalis are also tolerant of a range of soil conditions. Dogwood plants need acidic well drained soil in full to partial shade. When a dogwood tree does not receive adequate water the leaves of the tree. Mechanical and chemical injuries are other common dogwood tree problems.
The disease discula destructiva causes leaf twig and branch dieback beginning in the lower part of the tree.