Bean Rust: Orange Spots on Leaves
Leaves problem · common pattern reported by gardeners · verify locally
What you'll see
- Rusty-orange pustules on leaf undersides
- Yellow halos around spots
- Leaves drop early
Most common causes
- Bean rust fungus in humid weather
- Wet foliage for long periods
- Overcrowded plants limit air flow
How to fix it
- Remove badly infected leaves
- Improve spacing/air flow
- Apply sulfur-based fungicide if severe
Prevention: Water at the base, morning only Rotate bean beds Choose rust-resistant varieties
More Green Beans problems
Grow Green Beans with confidence
Open the Green Beans 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.