Gray mold in the flower garden

How to identify gray mold Gray mold causes a dark brown to black blight of flowers, buds, leaves and stems. Infected flowers and flower buds turn completely brown or black. On plants with large petals, brown spots may form on petals. Leaf spots often form near a wound or where an infected petal has fallen onto the leaf. Leaf spots are large round brown blotches with target like rings of darker brown. In wet weather, leaf spots can grow to turn the entire leaf brown. Flower and leaf infections can progress into stems.

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