That gray white, almost dusty film showing up on dogwood and crepe myrtle leaves right now across Frederick County is powdery mildew, and this stretch of warm, humid weather is exactly what it thrives on.
It rarely kills an established tree outright, but it does stress the leaves, cutting into the tree's ability to photosynthesize and store energy for next season.
Good airflow through the canopy is the best long term defense, which usually means some selective thinning rather than heavier chemical treatment.
Have you spotted that dusty coating on any of your trees or shrubs this month?
#FrederickCountyTreeService #TreeHealth
An authentic close up photo of powdery mildew coating on dogwood or crepe myrtle leaves. Real, specific disease photos help homeowners recognize the same symptom in their own yard.
Canva text suggestion: "That Dusty Film Is Powdery Mildew" or "Warm and Humid Weather Brings Mildew"