Common crops affected
Why it matters
Beyond feeding damage they are the top insect virus vectors, and colonies explode within a week, so early control protects both vigour and against virus spread.
When to act
Protect from early heading, before aphids move into the heart.
What to look for
- Aphids sheltering in hearts and leaf folds
- Distorted, contaminated inner leaves
- Honeydew and sooty mould
- Virus symptoms and downgrade at pack-out
How to manage it
- Encourage ladybugs and lacewings; avoid excess nitrogen.
- Hose off light colonies.
- Spray Spider Mite Control at 1:500 on both surfaces; repeat every 3–5 days.
Recommended Vegalab program
A registered Vegalab encapsulated insecticide for lettuce aphids — see the Product Finder; zero PHI and zero REI.
| Role | Product | Use |
|---|---|---|
| Primary control | Spider Mite Control | Natural oils kill soft-bodied pests on contact |
| Broader pressure | MultiMite Control | Mixed pest pressure |
Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.