It also attacks other members of the solanacea family including petunia and nightshade affecting all above-ground portions of the plant. Symptoms appear first on the younger leaves as irregularly shaped lesions and white cottony growth on the underside of the leaf.
Cool (nights in the 50s-60s and days in the 80s), wet weather and clouds provide optimal conditions for the disease.
- Grow resistant varieties
- Plant early in the season
- Prevent water from staying on leaves
- Remove infected leaves, fruit, plants, and weeds