A grape shoot that became infected with gray mold, Botrytis cinerea, and developed brown decay and a covering of fuzzy, grayish spores of the fungus.

Damaged stem showing rotted tissue. Credit: Jack Kelly Clark
A grape shoot that became infected with gray mold, Botrytis cinerea, and developed brown decay and a covering of fuzzy, grayish spores of the fungus. Credit: Jack Kelly Clark