Mint Rust: Orange Spots
Leaves problem · common pattern reported by gardeners · verify locally
What you'll see
- Orange pustules on undersides
- Swollen stems
- Leaf drop
Most common causes
- Mint rust fungus
- Humid weather
- Wet foliage
How to fix it
- Remove infected growth
- Thin plants for air flow
- Fungicide if early
Prevention: Good spacing Water at base Resistant cultivars (spearmint)
More Mint problems
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.