Pests
Onion fly
Identify Onion fly: symptoms, possible causes, prevention, and practical actions for 7 affected plants. Wilting and yellowing of leaves
Onion fly is relevant across 7 plant profiles on Wild-Wuchs. In the data it is most often linked with Garlic, Allium, Welsh onion, Shallot, Allium ramosum. Typical signs include: Wilting and yellowing of leaves For gardeners, early diagnosis, suitable growing conditions, and gentle action matter most: Crop rotation
Plants
7
Category
Bulb and tuber vegetables, Vegetables
Risk
medium
Synonyms
Delia antiqua, Zwiebelfliege, delia antiqua, zwiebelfliege
Scientific name
Delia antiqua
Overview
Symptoms
- Wilting and yellowing of leaves
- Rotting stems
- Rotten bulbs
Damage
- Onion fly larvae feed on the roots and base of leeks, which can lead to plant death. Young plants are particularly vulnerable.
- The larvae of the onion fly (Delia antiqua) feed on the roots and bulbs, leading to wilting and growth disorders.
Prevention
- Crop rotation
- Use insect netting from May
Organic control
- Remove infested plants
- Use insect netting
- Row covers
Affected plants
Guides
Related guides
Guide
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Similar topics
FAQ
How do I recognize Onion fly?
Wilting and yellowing of leaves
What causes Onion fly?
Causes often relate to site conditions, weather, care, plant density, or pest pressure.
How can I prevent Onion fly?
Crop rotation
What helps against Onion fly?
Remove infested plants
Which plants are affected?
Garlic, Allium, Welsh onion, Shallot, Allium ramosum, Winter Heath Onion, Onion
When does Onion fly usually appear?
Timing depends on plant, weather, and growing conditions; check regularly during stress periods.