Gray stuff on newly bought marigold petals. Immedietly cut flower off. Thoughts?
I bought a bunch of marigolds from a nursery today and noticed one of them had grayish petals. I cut it off and threw it away immediately. Could this be a sign of a fungus or disease in my other marigolds. I haven’t noticed any other gray spots on flowers yet. What could it be? Could this be harmful? What should I look out for?
Certified GKH Gardening Expert
It sounds like is could be Powdery Mildew.
This article will help you.