What you’ll see

Soft, floury film on upper/lower leaves and tender stems; patchy colonies that spread in low airflow. New leaves may twist or stunt.

How to confirm

  • Wipes off easily but returns within days.
  • Appears on multiple leaves, not just splash zones.
  • Becomes more visible after lights-out humidity spikes.

First moves

  • Prune worst patches; bag and bin.
  • Run a small fan on low; water at soil level.
  • Apply labeled gentle options weekly (sulfur, potassium bicarbonate, bio-fungicides); rotate actives.