Common crops affected
What is it?
Aphids are small, soft-bodied insects (1–3 mm) that feed by piercing plant tissue and sucking sap. They cluster on tender new growth, shoot tips, and the undersides of leaves. They come in green, black, yellow, pink, and gray, and reproduce extremely fast — a single female can produce dozens of live young without mating, so colonies explode in days.
How to identify it
- Clusters on shoot tips and leaf undersides
- Curled, distorted new growth
- Sticky honeydew and black sooty mould
- Virus-like symptoms from feeding transmission
Damage and how it spreads
Beyond the direct damage from sap feeding, aphids are the most important insect vectors of plant viruses — they can transmit mosaic and leaf-curl viruses as they move between plants, which is often far more damaging than the feeding itself. Honeydew also fuels sooty mold that blocks photosynthesis. Because aphids reproduce so quickly, a small colony can become an infestation within a week.
How to control it
- Knock back light infestations with a strong spray of water to the undersides of leaves.
- Encourage and protect natural predators — ladybugs, lacewings, and hoverfly larvae.
- Avoid excess nitrogen, which produces the soft new growth aphids love.
- Treat colonies directly with a natural contact insecticide, repeating every 3–5 days until controlled.
Recommended Vegalab solution: Spider Mite Control
Vegalab Spider Mite Control with MultiMite Control (oxymatrine) for broader pressure, targeting colonies on growing points and leaf undersides at first sign; encapsulated actives reduce off-target exposure — time around pollinators and natural enemies.
Results you can mention: MultiMite Control (oxymatrine) has been university-evaluated against cotton/melon aphid (Aphis gossypii); Spider Mite Control has demonstrated up to ~94% control of aphids in trials.
| Role | Product | Use |
|---|---|---|
| Primary control | Spider Mite Control | Contact miticide / insecticide |
| Companion / broader pressure | MultiMite Control | Broader mixed mite & insect pressure |
See crop-specific solutions
Preventing it next season
Scout new growth weekly, keep nitrogen balanced, and support beneficial insects. Vigorous, resilient plants tolerate aphid pressure better — balanced nutrition and adequate silica help build tougher tissue that is harder for aphids to colonize.
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