Leaf Mold
A fungal disease of tomato caused by Passalora fulva (also known as Fulvia fulva), common in humid greenhouse and high-tunnel production.
Affected Plant
Tomato
Severity
Low to Moderate
Symptoms
- Pale yellow spots on the upper leaf surface
- Olive-green to grayish-purple velvety mold on the leaf underside
Causes
- Favored by high humidity and poor air circulation
Prevention
- Improve ventilation, especially in greenhouses and tunnels
- Reduce humidity around plants
- Avoid overhead watering
- Choose resistant varieties where available
Management
- Apply fungicide where warranted
- Prune to improve airflow
Related Tomato Diseases
Think your plant might have Leaf Mold?
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.