Fruit Flies in Peppers & Cherries: Sticky Traps, Kaolin Clay & Harvest Timing

Similar issue: worms in peppers and cherries. Asks for help in Toronto (Zone 5).

Diagnosis: Fruit Flies

• Cherry fruit fly (Rhagoletis cingulata)
• Pepper maggot / similar dipteran
• Adults lay eggs in fruit; larvae feed inside.

Control Strategy: Target the Adult Fly

1. Sticky Traps: Red spheres (cherry) or yellow cards (pepper). Hang in canopy. Add vinegar/ammonia lure below.
2. Kaolin Clay (Surround): Spray fruit — white coating deters egg‑laying. Reapply after rain.
3. Diatomaceous Earth: Dust peppers — deters larvae.
4. Harvest Promptly: Pick at first ripeness. Eat, freeze, or cook same day — prevents larval development post‑harvest.

Timing

Flies emerge mid‑summer. Apply clay/DE just before. Monitor traps weekly.

Focus on adult suppression + rapid harvest = worm‑free fruit.