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.

Learn more

Sort by:

Filter by:

Filter by:

  • ©RHS SCN0006315

    Lackey moth

    The large orange, white and blue striped brown caterpillars of this moth feed in groups and can consume large areas of foliage on a wide range of deciduous trees. The damage is not often serious and the caterpillars can be tolerated.

  • Larvae of large rose sawfly. Image: RHS, Horticultural Science

    Large rose sawfly

    The caterpillar like larvae of large rose sawflies eat the leaves of wild and cultivated roses.

  • © RHS SCN0006131

    Large willow bark aphid

    The large willow bark aphid is one of the largest aphids in the world and can cause alarm when dense colonies form on willow trees, although it causes little damage to the trees.

  • A brown lawn, caused by drought. Credit:Neil Hepworth/RHS The Garden

    Lawns: dead patches

    Dead patches of grass on lawns are very common. However, it is usually easy to trace and remedy the cause, restoring green and healthy grass.

  • ©RHS SCN0006006

    Leaf and bud eelworm

    A widely distributed problem that is parasitic on leaves, stems and other above ground plant parts. They attack a wide range of plants but in gardens are widely known to cause severe damage to chrysanthemums.

  • ©RHS PUB0000690

    Leaf damage on houseplants

    Older leaves on healthy houseplants will naturally turn brown and die back over time as the plant matures, which is no cause for concern. But if most of the foliage on the houseplant changes colour in part or whole there may be a cultural problem, often rectified by paying more attention to watering, feeding or moving the plant to a more suitable position indoors. Plants that are unsuited to the conditions are unlikely to survive let alone thrive in the long term. However many house plants are short-lived by nature indoors, poinsettia and cyclamen for example, and will often need to be regularly replaced.

  • Shot hole damage on a prunus. Credit: RHS/Advisory.

    Leaf damage on woody plants

    Abnormal, damaged or falling leaves on a prized climber, shrub or tree can be alarming; however by following these simple steps to pinpoint the cause, gardeners can take effective action to protect their plants.

  • © RHS SCN0003795

    Leaf-cutting bees

    Leaf-cutting bees are a solitary bee that use leaf sections to make nests. They are useful pollinators and any damage to plants can be tolerated.

  • Leatherjackets

    Leatherjackets

    Leatherjackets can be damaging in lawns and sometimes kill small plants in flower beds and vegetable plots by eating roots and stem bases. They are often more numerous after a wet autumn, as damp conditions favour survival of eggs and young larvae.

  • Leek moth

    Leek moth

    Leek moth is mainly a problem in southern England but it is spreading north. The caterpillars feed within the foliage and stems or bulbs of leeks, onions and related vegetables.

Advertise here