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, use the parasitic wasp, Metaphycus helvolus, bought by mail order as a biological control.Use an insecticide containing imidacloprid or thiacloprid in early summer when the insects are more vulnerable.a wide range of plants, house plants, greenhouse

. In severe cases, growth becomes distorted, leaves curl up, the plant weakens and can die.Natural predators, such as birds, earwigs, ladybirds, lacewings, hoverflies, ground beetles, spiders and parasitic wasps are a gardener's best allies. Some

above 10 celsius in the greenhouse you can use a biological control, such as the parasitic wasp, Encarsia formosa, which attacks the juvenile forms of whitefly.Sprays with products containing imidacloprid and thiacloprid, which are absorbed by the plants