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. At each scale an ant would stop, tickle it with its antennae, and suck up the small droplet of honeydew that was presented.Neither of these insects has ever reached pest proportions in my garden, so I've never had need to regard them as pests. On the other

, the moment the symptoms appear. Wait a minimum of two weeks after spraying before using leaves in the kitchen.bay leavesmid- and late-springKeeping garden pests at bayWhiteflyMealybugsScale insectsRed spider mites

trees and bushesall year roundMore common garden pestsWoolly aphidsScale insectsPear leaf blister miteLeafhopper

.a range of ornamental plants, trees, shrubs, herbs, some vegetables, fruitspring, summerMore common garden pestsAphidsScale insectsFlea beetleEarwigs

chestnut scale insects, Pulvinaria regalis (pictured above). These strange insects can be quite unsightly on the bark of infested trees. In this case they've flaked away, leaving pale dusky echoes. They've probably been mopped up by the larvae of the badly

, pyracantha, sorbus all year roundMore common garden pestsAphidsWhiteflyLeaf miner flyEuonymus scale

of the plant, attracting black sooty mould, which inhibits photosynthesis and deprives the plant of energy.Young tender growth is vulnerable to aphid attack. These tiny insects (1mm-7mm long) are usually green or black and breed fast, smothering the plant

AphidsLeaf cutter beesScale insects

These tiny, sap-sucking pests may be only 0.5mm long but they can wreak havoc in a greenhouse or on houseplants indoors. For most of the year they are a pale green colour with two dark spots on their back; it's only in autumn and winter

. The adults have six legs and a pair of antennae, moving in the open at night, chewing the edges of leaves. This isn't itself a problem, but the fact that each adult is a female, laying almost 1,000 eggs in summer, is alarming.Holes and notches chewed out