fungal leaf spots on African Violet
Quick answer
If your African Violet has fungal leaf spots, the most likely cause is: African Violet leaf spots develop when water droplets remain on the velvety leaf surface — the leaf's fuzzy trichomes trap moisture and create micro-environments where Botrytis cinerea (gray mold) and various Alternaria species colonize. The fungal mycelium penetrates leaf tissue within 24-48 hours of continuous wetness, producing the characteristic concentric rings and yellow halos seen on infected leaves.
Start here:
- 1. Water only at the base of the plant — never pour water over leaves; use bottom watering method exclusively
- 2. Remove affected leaves immediately: cut at the base with sterile scissors to prevent spread
Why African Violet gets fungal leaf spots
African Violet leaf spots develop when water droplets remain on the velvety leaf surface — the leaf's fuzzy trichomes trap moisture and create micro-environments where Botrytis cinerea (gray mold) and various Alternaria species colonize. The fungal mycelium penetrates leaf tissue within 24-48 hours of continuous wetness, producing the characteristic concentric rings and yellow halos seen on infected leaves.
How to reverse fungal leaf spots on African Violet
- 1
Water only at the base of the plant — never pour water over leaves; use bottom watering method exclusively
- 2
Remove affected leaves immediately: cut at the base with sterile scissors to prevent spread
- 3
Improve air circulation: place fans on low nearby or space plants to allow airflow between leaves
- 4
Avoid overhead misting — misting alone creates the wet conditions that favor fungal growth
- 5
If fungal infection is severe: apply copper-based fungicide per label instructions; remove all affected tissue first
- 6
Keep leaves dry at all times; inspect plants regularly for early signs of spotting
Keep fungal leaf spots off this African Violet
Never wet African Violet leaves — water directly at the soil surface or use bottom watering; keep leaves completely dry; ensure good air circulation; remove dead flower stalks immediately as they are primary infection vectors.