What powdery mildew looks like
Powdery mildew is a fungus that appears like white flour or dust on leaf surfaces.
It spreads fast when:
- Airflow is poor
- Leaves stay damp
- Plants are crowded
Confirm it is mildew
Rub the white patch lightly. If it smears like powder, it is likely powdery mildew.
Treatment plan
Step 1: Stop the spread
- Remove the worst leaves.
- Improve airflow and spacing.
- Move indoor plants away from stagnant corners.
Step 2: Treat
- A gentle antifungal spray can help.
- Repeat every few days until new growth stays clean.
Step 3: Change the conditions
Fungus returns if the environment stays the same.
- Water the soil, not the leaves
- Avoid heavy humidity without airflow
Prevention
- Space plants
- Provide airflow
- Keep leaves dry overnight