Pests

Get expert help from the RHS to deal with pests and other problems

vine weevil

Vine weevil

Keep a watchful eye for signs of vine weevil beetles nibbling the edges of leaves and their grubs who will be munching on roots below the surface.

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  • ©RHS SCN0006348

    Fuchsia flea beetle

    Metallic blue fuchsia flea beetle adults and their black larvae can feed on the leaves of fuchsias, occasionally resulting in severe defoliation.

  • Fuchsia gall mite

    Fuchsia gall mite

    Fuchsia gall mite is was found for the first on the mainland of Britain in 2007. Since becoming established it has become a serious problem for fuchsia growers in southern England.

  • Fungus gnat adults

    Fungus gnats (sciarid flies)

    Fungus gnats, also known as sciarid flies, are associated with damp composts especially in house plants and seed trays.

  • ©RHS SCN0003027

    Gall mites

    Gall mites are tiny animals that cause distinctive abnormal growths (galls) on some plants. In most cases this does not affect the health of a plant. 

  • © RHS SCN0002077

    Geranium sawfly

    The greyish green larvae of geranium sawfly larvae eat holes in geranium leaves during the spring and summer.

  • ©RHS SCN0006541

    Geum sawflies

    The caterpillar like larval stage of two species of sawfly can completely defoliate Geum in spring and summer.

  • ©RHS SCN0006212

    Gladiolus thrips

    Gladiolus thrips can cause a mottling on foliage and flowers of gladiolus.

  • Glasshouse leafhopper (Hauptidia maroccana). Credit: RHS/Entomology.

    Glasshouse leafhopper

    Glasshouse leafhopper can cause a pale mottling on the foliage on a wide range of glasshouse and garden plants, including tomato and fuchsia.

  • Glasshouse red spider mites on webbing. Image: RHS, Horticultural Science

    Glasshouse red spider mite

    Glasshouse red spider mite is a common sap-feeding mite that can cause mottled leaves and early leaf loss on a wide range of greenhouse and garden plants. It is also known as two-spotted spider mite.

  • ©RHS Science

    Glasshouse thrips

    Thrips are small insects which can feed by sucking sap causing a fine silvery mottling of the upper leaf surfaces on many glasshouse plants and some which are grown outdoors in sheltered positions. Glasshouse thrips have recently become a frequent problem on outdoor plants such as Viburnum.

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