Zucchini Powdery Mildew: Complete Treatment Guide
What is Zucchini Powdery Mildew?
Symptoms
- White, powdery coating on leaves
- Spots spread to cover entire leaves
- Affects both sides of leaves
- Yellowing and curling of leaves
- Premature leaf death
- Reduced plant vigor
What Causes Zucchini Powdery Mildew?
- Fungal infection
- High humidity
- Poor air circulation
- Overcrowded plants
- Shade or low light
- Temperature fluctuations
How to Treat Zucchini Powdery Mildew
Organic Treatments
- Apply neem oil
- Use sulfur-based fungicide
- Milk spray solution
- Potassium bicarbonate
- Prune affected leaves
- Improve air flow
Chemical Treatments
- Apply fungicide with chlorothalonil
- Use systemic fungicides
- Preventive fungicide sprays
- Follow label instructions
Cultural Controls
- Space plants properly
- Improve air circulation
- Remove affected leaves
- Water at soil level
- Morning watering only
- Clean up plant debris
How to Prevent Zucchini Powdery Mildew
- Plant resistant varieties
- Proper plant spacing
- Full sun exposure
- Avoid overhead watering
- Regular monitoring
- Crop rotation
Recommended Fertilizers for Zucchini Powdery Mildew
- Sulfur-based fungicide
- Neem oil
- Potassium bicarbonate
- Seaweed extract