Troubleshooting
Crow Garlic problems — and how to fix them
Crow Garlic (Allium vineale) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Allium rust (Puccinia allii)
Orange-red pustules on leaves in cool, humid conditions; most problematic in wet springs. Improve air circulation and remove heavily infected foliage; no fully effective chemical control for the home garden.
White rot (Stromatinia cepivora)
A soil-borne fungal disease causing yellowing, wilting, and fluffy white mycelium at the bulb base. Soil can remain infested for up to 20 years; remove and destroy affected plants and avoid replanting Alliums in that spot.
Prevent crow garlic problems before they start
Most crow garlic issues are care-mismatch, not bad luck. Dial in the basics:
Crow Garlic problems — FAQ
Why is my crow garlic allium rust (puccinia allii)?
Orange-red pustules on leaves in cool, humid conditions; most problematic in wet springs. Improve air circulation and remove heavily infected foliage; no fully effective chemical control for the home garden.
Why is my crow garlic white rot (stromatinia cepivora)?
A soil-borne fungal disease causing yellowing, wilting, and fluffy white mycelium at the bulb base. Soil can remain infested for up to 20 years; remove and destroy affected plants and avoid replanting Alliums in that spot.