What to look for
A dusty white coating spreads across leaf surfaces, usually starting on the oldest growth.
Why it happens
Warm days followed by cool, humid nights — common on squash, cucumber, and zinnia.
Gentle remedy
Improve airflow, water at the base, and apply a 1:9 milk-water spray weekly.
Not sure what you're looking at?
Upload a photo and your BeeWise Head Gardener will identify the problem and suggest a gentle fix.