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Plant, water, mulch, and prune garden trees and flowering shrubs without overlooking their different needs.
Search this topicRepeated scorch can have several causes, including root stress or bacterial leaf scorch, a disease that restricts water movement inside the tree. Its symptoms may recur and spread through the canopy over successive years. Record which branches and leaves are affected and when it starts, then seek an extension or arborist diagnosis. Repeatedly adding water does not establish the cause.
Powdery mildew is one possibility, particularly when new leaves also twist or remain smaller than usual. Its appearance can vary, and older affected leaves may develop blotches. Compare clear photographs with an extension diagnostic guide and evaluate growing conditions before treatment. A resistant cultivar is worth considering for future planting where the disease is a recurring problem.
No. Dogwoods can develop several leaf-spot diseases with different consequences. Some late-season spots are largely cosmetic, while dogwood anthracnose can spread into twigs and cause branch dieback. Note when the spots appeared, whether they enlarge rapidly, and whether stems are dying. Those details help a plant clinic distinguish a minor leaf problem from a disease that needs more attention.
Record the species, planting date, recent weather, watering, and any nearby digging or construction. Photograph the whole canopy, trunk base, and affected leaves or branches. Distinguish symptoms such as wilting from evidence such as visible insects or fungal growth. Several stresses can act together, and a pest found on an already weakened tree may not explain the original problem.
Source checks for these answers: September 22, 2026. Product instructions and local requirements can vary.