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Mealybugs

By Gardeners' World on 18/10/2011 15:31:08

, but it's a suitable treatment for edible plants. Inspect new plants before bringing them indoors. Severely affected plants might have to be destroyed. Use the systemic insecticides imidacloprid or thiacloprid to kill the feeding bugs. cacti, succulents


Vine weevil

By Gardeners' World on 19/10/2011 12:33:26

are very effective, but compost with the chemical imidacloprid controls the larvae for up to a year. Other formulations provide just short-term protection.many plants, container-grown plants are especially vulnerableall year roundMore common garden pests


Scale insects

By Gardeners' World on 18/10/2011 15:56:46

, 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


Thrips

By Gardeners' World on 19/10/2011 12:32:09

be used on houseplants and in greenhouses to attack the western flower thrips. Organic pesticide sprays are available, which are based on plant oils or pyrethrum.Ornamental plants can be sprayed with insecticides containing imidacloprid with methiocarb


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