Troubleshooting
Field Garlic problems — and how to fix them
Field Garlic (Allium oleraceum) 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 leaf miner
The fly Phytomyza gymnostoma tunnels into leaves and stems, leaving characteristic white streaks and causing wilting. Remove and destroy affected foliage; fine insect mesh provides physical protection in spring.
Bulb rot
Caused by Fusarium or bacterial soft rot in waterlogged soils. Bulbs soften and emit an unpleasant smell. Ensure free drainage before planting and rotate Allium crops every 3–4 years.
Prevent field garlic problems before they start
Most field garlic issues are care-mismatch, not bad luck. Dial in the basics:
Field Garlic problems — FAQ
Why is my field garlic allium leaf miner?
The fly Phytomyza gymnostoma tunnels into leaves and stems, leaving characteristic white streaks and causing wilting. Remove and destroy affected foliage; fine insect mesh provides physical protection in spring.
Why is my field garlic bulb rot?
Caused by Fusarium or bacterial soft rot in waterlogged soils. Bulbs soften and emit an unpleasant smell. Ensure free drainage before planting and rotate Allium crops every 3–4 years.