Under severe conditions, the new leaves can exhibit leaf scorch, twisting, distortion, and smaller than normal growth. Central Maryland One of the very common diseases of dogwood trees is the dogwood anthracnose which is caused by the fungus Discula sp. As the canker enlarges it will form a sunken area on the trunk and the bark will dry and crack, exposing the wood underneath. Dogwood anthracnose is caused by the Discula destructiva fungus. Photo: Cheryl Kaiser, University of Kentucky, Bugwood.org. Mulch should be no more than 3 inches deep. Young green stems and water sprouts are especially susceptible. Plant disease-resistant cultivars of flowering dogwoods. We cater Davidsonville, Stevensville and Kent Island locations. Eventually, the entire tree may show these symptoms. They may need irrigation during the drier months of July and August. Additional Resources: Tree planting and abiotic (non-living) problems of trees.By David L. Clement, Principal Agent, University of Maryland Extension, Home and Garden Information Center, revised and edited 11/2019. University of Maryland College Home and Garden Information Center's Integrated Pest Management Series HP #12 offers information about dogwood diseases and pests, including anthracnose. If one such part is eaten or handled, first aid is required. Fungi are the main causes of dogwood tree diseases. Informational table showing disease name, symptoms, … Other trees or multi-stemmed shrubs in the same genus as dogwood, but less commonly seen in landscapes, include cornelian cherry. The rough bark is a reddish-brown color. This fungal disease can be serious during wet spring weather. There are several damaging diseases and pests that affect dogwood trees. These blighted, drooping leaves can remain hanging on the branches in wet weather before defoliation occurs. Call toll-free in *Maryland* at 1-877-620-8DNR (8367) Out of State: 410-260-8DNR (8367) Photo: University of Maryland Extension. symptoms on flowering dogwood. Avoid this problem by planting in a location where your tree will receive partial shade and supplemental moisture during hot, dry weather. Trees at Hunting Creek Lake, Cunningham Falls State Park, Thurmont, Maryland… There are several hybrids between the native flowering dogwood and the non-native Kousa dogwood that exhibit better disease resistance and longer bloom periods than the native species. Dogwood Anthracnose. Powdery Mildew: Erysiphe pulchra (formerly Microsphaera pulchra) is the fungus that attacks leaf surfaces and tender shoots and causes powdery mildew. If the dieback reaches the main trunk the entire tree can be killed.To distinguish this disease from other leaf spots, examine the underside of the leaves (with a hand lens or magnifying glass) for numerous small tan to brown dots, about the size of a printed period, scattered within the blighted tissue. Dogwood Anthracnose is a disease caused by the fungus Discula destructiva that attacks native and ornamental flowering dogwood trees. Dogwood anthracnose, caused by the fungus Discula destructiva, is a serious disease of flowering dogwoods and continues to make an impact on the vitality of landscape and forest dogwoods. Dogwood Acres is the Annapolis area's best pet care facility provider for Doggie Daycare, Dog Training, Cat Boarding & Grooming services. For landscaped areas, flowering dogwoods: , also called Chinese dogwood, has a longer bloom season and different growth characteristics and is more tolerant of dry conditions than the native flowering dogwood. 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