⚠ ModerateA dense aphid colony on new growth � rapid reproducers that thrive on over-fertilised, soft tissue.
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Pests
Aphids on Tomato Plants
Commonly affects: Solanum lycopersicum (Tomato)
Clusters of small, soft-bodied insects gather on new growth, stem tips, and the underside of young leaves. Affected leaves may curl and become sticky with honeydew, sometimes followed by black sooty mould.
Potential Causes
- 1Warm conditions and over-fertilising with nitrogen encouraging soft, attractive new growth
- 2Ants farming aphids for honeydew and protecting them from predators
- 3Introduction from a nearby infested plant or new transplants
Solution Steps
- 1Blast colonies off with a strong jet of water, focusing on stem tips and leaf undersides.
- 2Apply insecticidal soap or neem oil to all affected surfaces, repeating every 5�7 days for three cycles.
- 3Encourage natural predators such as ladybugs and lacewings in outdoor settings.
- 4Control ant activity nearby, since ants actively protect aphid colonies.
Prevention Tip
Avoid over-fertilising with nitrogen, and inspect new transplants closely before placing them near established tomato plants.
