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-autumn.Treat the lawn with an insecticide containing imidacloprid from May to October.lawns, strawberries, brassicas, some ornamental plantsspring to autumnMore common garden pestsPea and bean weevilsCaterpillarsFlea beetleEarwigs

When apple trees are in flower, the sawfly, Hoplocampa testudinea, lays its eggs in the developing fruit. In June, the larvae tunnel their way under the skin of the fruit and into the core, causing the apples to fall. When they're ready, they tunnel out of the apples, creating a ...

Adult and immature leafhoppers suck sap from the leaves of plants and cause mottled discolouration. The 3mm-long adults readily spring from the leaves when disturbed. The pest usually overwinters as eggs laid on the plant. These hatch in spring

Earwigs, which can be up to 14mm long, hide during the day and emerge at night to feed. The females lay eggs in late-winter, usually in the soil, which hatch in spring. Although earwigs can damage plants, they also eat small pests and their eggs

, moving to a host plant to overwinter. They breed at an alarming rate - females can give birth to live young when only a week old. They are sap-sucking pests and the excess sap is excreted as honeydew. This sticky residue falls on to the lower leaves

Capsid bugs are sap-feeding pests. The 6mm-long adults vary in colour from green to red-brown, depending on the species. Look for the distinctive diamond shape when their wings are folded. When they feed, they release a toxic saliva that kills off

In mid-spring, 2mm-long, greenish-brown, adult bay suckers emerge from overwintering. They feed on young bay leaves, turning them yellow and making the edges thicken and curl. The females then lay eggs under the curling edges and the new, young grey

anythingearly spring, summerMore common garden pestsLeatherjackets on lawns, brassicas, strawberries and ornamental plantsElephant hawk moth on fuschia plantsWhitefly on greenhouse plantsMullein moth - affecting verbascum, buddleja and figworts.

.apples, pears, quince, walnutsspring, summerMore common garden pestsMullein moth - on verbascum, buddleja and figwort.Elephant hawk moth on fuschia plants.Caterpillars on any plants.Cabbage white caterpillars on brassicas and nasturtiums.

the emerging aphids. Don't wait for the symptoms to appear, as there's no point in spraying once the leaves have become puckered.blackcurrants, redcurrants, whitecurrants early to mid-winter, springCommon garden pests affecting fruit treesWolly aphids on apple