Aphids on eggplant
The peach-potato aphid and the glasshouse potato aphid take over eggplant shoot tips and leaf undersides. They suck sap, deform young growth and transmit nightshade viruses.
Symptom photos
Symptoms
- Colonies of green or black aphids at the shoot tips
- The youngest leaves curling and puckering
- Sticky honeydew on leaves and fruit
- Black sooty mold
- Shoot tips ceasing to grow and flowers dropping
What it does to the crop
- Young leaves and shoots deformed
- Transmission of viruses, including cucumber mosaic virus
- Fruit fouled with honeydew
- Weakened plants and a smaller crop
What encourages it
- Warm weather and growing under cover
- Too much nitrogen and lush growth
- No beneficial insects in the tunnel
- Peppers and tomatoes with aphids on them nearby
Prevention
- Check shoot tips once a week
- Use yellow sticky traps for monitoring
- Introduce ladybirds and lacewings under cover
- Keep nitrogen feeding moderate
- Clear weeds inside and around the tunnel
⚠️ Before you reach for a spray
This atlas is informational and still growing — different diseases can look almost identical. Confirm the diagnosis and read the product label before applying any plant protection product. If you are unsure, ask your local extension or advisory service.
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