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Pest & Disease Library · Solutions

Whitefly Control in Tomato

Whitefly is a damaging tomato pest, especially under glass, feeding on sap, coating the canopy in honeydew and sooty mould, and transmitting serious viruses. Populations rebound fast, so sustained management matters.

Common crops affected

Why it matters

They sap vigour and spread viruses, and breed continuously in warmth so populations escalate fast without intervention.

When to act

Scout undersides and act early; maintain pressure through the crop under glass.

What to look for

  • Clouds of tiny white adults disturbed from the canopy
  • Scale-like nymphs on leaf undersides
  • Honeydew and black sooty mould
  • Virus symptoms and irregular ripening

How to manage it

  1. Use yellow sticky traps; quarantine new plants.
  2. Remove heavily infested lower leaves.
  3. Spray Spider Mite Control on leaf undersides; repeat every 3–5 days.

Recommended Vegalab program

A registered Vegalab encapsulated insecticide for whitefly — see the Product Finder; zero PHI and zero REI.

RoleProductUse
Primary controlSpider Mite ControlContact control of soft-bodied pests
Broader pressureMultiMite ControlMixed pest pressure

Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.

Frequently asked questions

Why target nymphs?

Nymphs on leaf undersides are the controllable stage; adults move — treat the undersides thoroughly.