08/28/2026
🌳 What’s that white coating on your dogwood?
It may be "powdery mildew", a common fungal disease we see on flowering dogwoods.
🔎 How we diagnose it:
We look for white or gray powdery growth on the leaves, along with curling, reddish discoloration, yellowing or scorched-looking areas. We also check the tree carefully to rule out other common dogwood diseases.
🌿 What do we recommend?
For mild cases, improving airflow, reducing stress on the tree and cleaning up infected fallen leaves may be all that’s needed.
If infection is severe, starts early in the growing season, or returns year after year, a properly timed fungicide program can help protect new growth.
The goal isn’t just to make the leaves look better — it’s to keep the tree healthy and vigorous long-term.
Concerned about something you're seeing on your trees? Macomber Tree can help identify the problem and recommend the right course of action.