How to recognize greenhouse whitefly 

Adult greenhouse whiteflies have their wings in an almost horizontal position. The wings are somewhat overlapping, covering almost the entire body. From a top down view, whiteflies have a triangular shape. Adult whiteflies and larvae are usually found on the underside of young leaves in the top of plants. Eggs are deposited in circles on the underside of the leaves in the top of the plant. Eggs start white, but will turn black in 2-3 days. 

The first instar larvae have legs and antennae. They will search for a suitable spot to settle on the leaf. The second and third instar larvae are flat, translucent lightly yellow colored. They are barely visible with the naked eye and look somewhat like an armoured scale. During the fourth and final instar, larvae will fatten up and change into a box-like-shape with a ring of waxy threads around the body. In this stage the eyes are visible through the translucent skin. When the whitefly emerges, a white box-shaped skin with a t-shaped tear will remain.  

Greenhouse whitefly Trialeurodes vaporariorum adults
Greenhouse whitefly adults
Greenhouse whitefly Trialeurodes vaporariorum pupa
Greenhouse whitefly pupa

Greenhouse whitefly damage 

Larvae and adults cause crop damage. They suck plant saps from the phloem vessels of the plant, which causes little spots on the leaves. As a byproduct honeydew is excreted, which is usually more damaging than the actual feeding. The honeydew acts as a growth medium for black sooty mold fungus which will hamper photosynthesis and make products unsuitable for sale.  

The third and potentially most damaging characteristic is the whitefly’s capability of transmitting plant viruses. Crops that whiteflies often transfer viruses to are for example potato, tomato or cucumber family members. 

Greenhouse whitefly life cycle

  • 100-300 eggs per female, depends on crop
  • 1st larval stage mobile, 2nd to 4th larval stages immobile
  • egg to adult in 20 days at 27°C (on tomato)
  • adults emerge through t-shaped opening in cocoon
  • eggs and adults reside in top of plant

Greenhouse whitefly host plants

  • polyphagous
  • vegetable crops like tomato, cucumber, egg plant and zucchini
  • pot plants like gerbera and fuchsia
  • rose
Our products against

Greenhouse whitefly

ERCAL

Effective against
– Greenhouse whitefly
– Tobacco whitefly

SWIRSKI MITE - Amblyseius swirskii, roofmijt

SWIRSKI-MITE

Effective against
– (False) spider mite
– Thrips 

– Whitefly

DELPHIBUG

Effective against
– Greenhouse whitefly
– Tobacco whitefly

ENERMIX

Effective against
– Greenhouse whitefly
– Tobacco whitefly

LIMONICA - Amblydromalus limonicus, roofmijt

LIMONICA

Effective against
– Thrips
– Whitefly
– Tarsonemid mite

Product MONTDOMITE roofmijt

MONTDO- MITE

Effective against
– Several thrips
– Whitefly

EN-STRIP

Effective against
– Greenhouse whitefly
– Tobacco whitefly

MACROLOPHUS PYGMAEUS

Effective against
– Whitefly and thrips
– Spider mite
– Tomato looper

Common whitefly species

Greenhouse whitefly

Tobacco whitefly
Cabbage whitefly