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Mar 19, 2023 · Learn how to identify and treat six common dogwood diseases, such as root rot, blight, crown canker, and anthracnose. Find out how to prevent these diseases with proper planting, care, and fungicide application.
- Dogwood Anthracnose. Dogwood anthracnose is a serious fungal disease that affects dogwood trees. It’s caused by the fungus Discula destructiva, which can thrive and spread under wet, cool conditions.
- Spot Anthracnose. Spot anthracnose, also known as Elsinoë leaf spot, is a common disease in dogwood trees. It’s caused by the fungus Elsinoë corni. Symptoms.
- Powdery Mildew. Powdery mildew is a common fungal disease that affects many types of plants, including dogwood trees. It’s caused by the fungus Erysiphe pulchra.
- Leaf Spot Diseases. Leaf spot diseases in dogwood trees can be caused by several different fungi, including Septoria, Cercospora, and Phyllosticta. Symptoms.
Nov 15, 2023 · Learn about the symptoms, causes, and management of common diseases that affect dogwood trees, such as anthracnose, leaf and flower blight, crown canker, powdery mildew, and septoria leaf spot. Find out which dogwood varieties are resistant to some diseases and how to prevent or treat them.
DiseaseSymptomsPathogen/causeManagementAnthracnose and DeclineBrown spots up to 1/4-inch in diameter go ...Discula destructivaPrune and destroy dead twigs and branches ...Leaf and flower blightIrregular, brown, wrinkled patches form ...Botrytis cinereaThis disease occurs only if weather ...Crown cankerLeaves are smaller than normal, light ...Phytophthora cactorumRemove the infected tree and do not ...Powdery mildewWhite fungal growth develops on the ...Erysiphe pulchra and Phyllactinia ...Apply a fungicide as soon as symptoms are ...If the tree is planted in full sun with limited water or under other stress, the damage can be serious. Most insect damage occurs on the trunk and branches of dogwoods. Commonly occurring insect pests of dogwood include the dogwood borer, dogwood club-gall midge, and scales. Dogwood borer adult.
- Powdery Mildew. Symptoms: white coating on leaves; may be on upper and lower surfaces. Powdery mildew (caused by fungal pathogens Erysiphe and Phyllactinia guttata) has become a more severe and widespread problem in Maryland in recent years.
- Elsinoë Leaf Spot. Symptoms: spots, 1/8 inch or smaller with purple borders, appear on the leaves or flower bracts in the spring. Elsinoë Leaf Spot (also called Spot Anthracnose) is a fungal disease that is favored by wet spring weather.
- Leaf and Flower Petal Blight. Symptoms: spotting on the flower bracts to complete collapse of the bracts; gray, fuzzy growth on terminal leaves and flowers.
- Dogwood Anthracnose. Symptoms: dark spots on leaves and flower bracts; blighted leaves; twig dieback; reduces flowering, causes defoliation (spring). Dogwood anthracnose is caused by a fungal pathogen, Discula destructiva.
Mar 9, 2023 · Learn about the symptoms, prevention and treatment of powdery mildew, dogwood anthracnose, spot anthracnose and leaf spot, the most common fungal diseases that affect dogwood trees. Find out which dogwood varieties are resistant to these diseases and how to improve air circulation and ventilation around your trees.
Apr 24, 2022 · Dogwood anthracnose is one of the most common fungal diseases to attack this plant. It starts out with blighted leaves, showing purple margins, and tan color around the edges of leaves. Secondary signs may include cankers on twigs and smaller branches. These gradually extend to the trunk of the tree with necrotic weeping areas.
