Powdery Mildew
A common fungal disease of squash and other cucurbits, caused by fungi such as Podosphaera xanthii.
Affected Plant
Squash
Severity
Low to Moderate
Symptoms
- White, powdery fungal patches on leaves and stems
- Leaf yellowing and curling
- Reduced plant vigor and yield in severe cases
Causes
- Favored by moderate temperatures and high humidity with dry leaf surfaces
- Dense or shaded plantings that restrict airflow
Prevention
- Choose resistant varieties where available
- Ensure good plant spacing and airflow
- Avoid excessive nitrogen fertilization
Management
- Apply fungicide at the first sign of disease
- Remove heavily infected leaves
Think your plant might have Powdery Mildew?
Upload a photo of the affected leaf and get an instant AI diagnosis with a Grad-CAM explanation of what the model saw.
Diagnose Your PlantDisclaimer: This is an AI-generated result and not a replacement for expert agronomic or plant-pathology diagnosis. Confidence scores reflect the model's certainty, not biological ground truth. The model was trained and evaluated on leaf photos captured under controlled, lab-like conditions, so accuracy on real-world field photos (cluttered backgrounds, variable lighting, multiple or overlapping leaves) may be lower than the reported evaluation metrics.