Cucumber Powdery Mildew: Complete Treatment Guide
What is Cucumber Powdery Mildew?
Symptoms
- White, powdery spots on leaves and stems
- Spots spread to cover entire leaf surface
- Yellowing of affected leaves
- Leaf curling and distortion
- Reduced plant vigor
- Premature leaf death
What Causes Cucumber Powdery Mildew?
- Fungal infection
- High humidity
- Poor air circulation
- Overcrowded plants
- Warm days and cool nights
- Shade or low light conditions
- Susceptible varieties
How to Treat Cucumber Powdery Mildew
Organic Treatments
- Apply neem oil spray
- Use milk spray solution
- Apply potassium bicarbonate
- Use compost tea spray
- Apply sulfur-based fungicide
- Use diluted apple cider vinegar
Chemical Treatments
- Apply fungicide with chlorothalonil
- Use systemic fungicide
- Apply copper-based fungicide
- Use preventive fungicide sprays
Cultural Controls
- Improve air circulation
- Space plants properly
- Remove affected leaves
- Water at soil level
- Prune to improve airflow
- Clean up plant debris
How to Prevent Cucumber Powdery Mildew
- Plant resistant varieties
- Proper plant spacing
- Full sun exposure
- Avoid overhead watering
- Morning watering only
- Regular monitoring
- Crop rotation