Mold on Multiple Garden Plants: Cultural Fixes First

Mold on gerbera daisies, angel trumpet, marigolds, foxglove, butterfly bush, asters (not cosmos/sunflowers). Doesn't rub off; scrapes off with knife. Dursban (insecticide) failed—it's not for mold.

Approach

• Identify mold type (likely fungal, not powdery mildew).
• Improve airflow, reduce overhead watering.
• Remove severely affected plants/leaves.
• Apply labeled fungicide (chlorothalonil, copper, neem) per diagnosis.
• Soil test for nutrient balance.

Note

"Atomic Grow" promoted in some responses. Verify via university trials. Dursban is chlorpyrifos—restricted use, not for mold.