Powdery Mildew
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About this condition
A fungal disease in which white powdery mycelium spreads across leaf surfaces. It can occur on foliage plants and tends to develop in environments with poor air circulation or significant temperature fluctuations.
Common symptoms
- A white powdery coating or patches may appear on the upper surface of leaves
- The white film may spread across the entire leaf
- Leaves may become distorted or crinkled
- Severe cases may cause yellowing and leaf drop
Common causes
- Indoor environments with large temperature fluctuations and poor air circulation
- Inconsistent watering that alternates between dry and wet conditions
- Crowded planting allowing leaves to touch, reducing airflow
- Infection by airborne fungal spores
Prevention (growing conditions & routine care)
Space plants to prevent leaf overlap and ensure good air circulation. Avoid leaving foliage wet overnight by watering earlier in the day.
Related guide
→ Browse the species guide for this animalWhen to see a vet
Consider acting within a few daysWhat can a nursery or grower do?
Specialist nurseries and growers can identify environmental conditions that promote disease development and provide advice on reducing plant density and improving ventilation in the growing space.
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