Powdery Mildew
Erysiphe cichoracearum
A fungal disease that affects a wide variety of plants. It is easily recognizable by its white, powdery spots on leaves and stems.
Symptoms
- White, powdery spots on leaves, stems, and flowers.
- Leaves may turn yellow and dry out.
- Distorted shoots.
- Flowers and fruit may be stunted or malformed.
Causes
- High humidity at night and low humidity during the day.
- Poor air circulation.
- Shady conditions.
- Overcrowded planting.
Prevention
- Choose resistant plant varieties.
- Ensure good air circulation by pruning and proper spacing.
- Water plants from below to keep foliage dry.
- Avoid over-fertilizing with nitrogen.
Treatments
- Prune and destroy infected parts.
- Apply fungicides, such as sulfur, neem oil, or potassium bicarbonate.
- Use a homemade remedy of milk and water spray.
- Increase air circulation.