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Garden pests to look out for: in pictures

The leaf munching vine weevil is number two on the garden pest list

Some pests, such as slugs and snails, are always with us and they typically generate the most enquiries to the RHS members’ advice service. Other pests are relatively new in Britain, or are expanding their range northwards, and so are being encountered by gardeners for the first time.

Vine weevil

This is one of the most troublesome pests and causes damage to a wide range of plants in gardens, greenhouses or the house. The adult weevils are active at night from spring to autumn. They spoil the appearance of foliage by eating notches in the leaf margins. The grub stage is even more destructive as they eat roots and can kill plants, especially those in pots or other containers. Adult weevil damage is difficult to prevent but you can protect plants against the larvae in late summer by applying a compost drench to ornamental plants grown in pots, such as Provado Ultimate Vine Weevil Killer 2 or Scotts Bug Clear Vine Weevil Killer. A biological control, using a pathogenic nematode (Nemasys), can be used on any plant in a pot or the open ground.

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