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 SCN0006130

    Rose root aphids

    The presence of large numbers of rose root aphid eggs on rose stems can cause concern, however the activities of the root feeding insects rarely damage plants.

  • ©RHS SCN0006527

    Rose slug sawfly or slugworm

    The grazing activities of the slug-like larvae of the rose slugworm sawfly can cause leaves on roses to turn brown and dry up.

  • Rosemary beetle

    Rosemary beetle

    The rosemary beetle (Chrysolina americana) originates from southern Europe and has been found in Britain since the mid-1990s. The larvae and adults feed on the foliage of rosemary and related plants.

  • Rosy apple aphid damage on fruit and foliage

    Rosy apple aphid

    Rosy apple aphid is one of several aphid species that can occur on apple trees, but it is generally the most damaging.

  • ©RHS SCN0004048

    Sage and Ligurian leafhoppers

    Sage and Ligurian leafhoppers can cause a coarse pale mottling on sage, rosemary, lavender and related plants in the spring and summer.

  • Scale insects on bay. Image: RHS, Horticultural Science

    Scale insects

    Scales are limpet-like insects that feed by sucking sap from a wide range of plants, including houseplants, greenhouse plants and many fruit and ornamental plants grown outdoors. There are more than 25 species of scale insect in the UK Scale insects can weaken plants and some excrete a sticky substance (honeydew) on foliage, which allows the growth of black, sooty moulds.

  • ©RHS SCN0004311

    Scurfy rose scale

    Small white sap sucking scurfy rose scale insects can encrust rose (Rosa) and occasionally blackberry (Rubus fruticosus) stems, giving plants an unhealthy appearance.

  • Damage caused by sempervivum leaf miner. Image: RHS

    Sempervivum leaf miner

    Sempervivum leaf miner was first recorded in southern England during 2008. It has spread slowly but can cause serious damage to house leeks. It originates from mainland Europe.

  • ©RHS SCN0001899


    Slugs are persistent and widespread pests which can cause havoc in the garden, eating holes in leaves, stems, flowers, tubers and bulbs. They can cause damage throughout the year on a wide range of plants, but seedlings and new growth on herbaceous plants in spring are most at risk.

  • Snail. Image: RHS, Horticultural Science


    Snails are familiar animals that can cause a lot of damage in the garden, eating holes in leaves, stems and flowers.

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