Classic look

Velvety gray fuzz on senescing flowers, pruning wounds, or crowded stems. Nearby tissue collapses quickly in cool, humid, still air.

Where it starts

Spent blooms, damaged leaves, and dense canopies. Often follows overwatering, cold drafts at night, or prolonged leaf wetness.

Control now

  • Remove affected tissue into a bag; sanitize tools each cut.
  • Increase airflow and keep leaves dry overnight.
  • If needed, apply labeled bio-fungicides; avoid spraying late evening.