Black Spots on Basil Leaves
Leaves problem · common pattern reported by gardeners · verify locally
What you'll see
- Dark spots with yellow halo
- Spots merge
- Leaf drop
Most common causes
- Bacterial leaf spot
- Cool wet conditions
- Splashing water
How to fix it
- Remove infected leaves
- Space plants
- Water at base
Prevention: Avoid overhead watering Good spacing Don't work with wet plants
More Basil problems
Grow Basil with confidence
Open the Basil growing guide → · Planting calendar · Pest & problem diagnoser
ZoneFig content reflects widely published extension-service and gardening guidance. Symptoms and causes are common patterns, not a diagnosis for any individual plant — verify locally and treat conservatively.