Troubleshooting
Gattefosse's Mint problems — and how to fix them
Gattefosse's Mint (Mentha gattefossei) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Powdery mildew
Common in humid, low-airflow conditions. Improve ventilation, avoid wetting foliage, and remove affected stems. Treat with a dilute baking soda spray or neem oil if persistent.
Mint rust (Puccinia menthae)
Orange pustules on undersides of leaves. Remove and destroy infected material; do not compost. Rotate container soil annually and avoid overhead watering.
Aphids and spider mites
Soft new growth attracts aphids in spring; spider mites appear under dry conditions. Blast off with water, apply insecticidal soap, and increase humidity to deter mites.
Prevent gattefosse's mint problems before they start
Most gattefosse's mint issues are care-mismatch, not bad luck. Dial in the basics:
Gattefosse's Mint problems — FAQ
Why is my gattefosse's mint powdery mildew?
Common in humid, low-airflow conditions. Improve ventilation, avoid wetting foliage, and remove affected stems. Treat with a dilute baking soda spray or neem oil if persistent.
Why is my gattefosse's mint mint rust (puccinia menthae)?
Orange pustules on undersides of leaves. Remove and destroy infected material; do not compost. Rotate container soil annually and avoid overhead watering.
Why is my gattefosse's mint aphids and spider mites?
Soft new growth attracts aphids in spring; spider mites appear under dry conditions. Blast off with water, apply insecticidal soap, and increase humidity to deter mites.