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Get expert help from the RHS to deal with pests and other problems
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.
Pear trees sometime develop distinctive raised pink or yellowish green blotches which usually turn black on their leaves during the spring and summer. This is a sign of a pear blister mite infestation.
Pears can be attacked by a number of pests and diseases. Particularly frustrating can be the pear midge which can devastate a promising looking harvest early in the season.
Pear-bedstraw aphid can cause leaf discolouration and distortion on pear trees in spring.
Phormium mealybug unlike glasshouse mealybugs only affects New Zealand flax and can survive out of doors throughout the year.
Pieris lacebug originates from Japan and was first detected in Britain in a garden near Windsor in 1998. Since then it has become widespread in England, where it can cause serious damage to the foliage of Pieris and some rhododendrons. It is sometimes called the andromeda lacebug.
Wood pigeons can be the most serious bird pest in gardens and allotments. They peck at leaves, tearing them, often just leaving the stalks and larger leaf veins behind. Pigeons will attack many plants, lilac, brassicas and peas are particularly susceptible.
The caterpillar-like larvae of two species of sawfly can occasionally cause considerable defoliation of pine trees.
Pittosporum sucker is a sap sucking insect that can spoil the appearance of pittosporum by causing discoloration and distortion of leaves.
Two aphid species can cause problems on plums, damsons, greengages and sloe. These are the plum leaf-curling aphid and mealy plum aphid.
It is never pleasant to bite into a ripe juicy plum only to find it has a maggot (caterpillar) feeding inside.
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