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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

Hungry, voracious caterpillars can be found in a wide variety of colours and sizes. Some feed on fruits, roots and stems, but the likes of the cabbage white butterfly, hawk moth and winter moth feed on leaves. Although they may at first seem an attractive form of wildlife, large ...

The adult codling moths lay their eggs on or near developing fruit. These eggs hatch into small white caterpillars, which eat their way into the fruit and feed inside while it's developing. The caterpillars may be found inside the fruit at harvest time, but have usually eaten the...

Sap-sucking aphids are problematic for currant bushes. In spring, they cause the foliage to become blistered and puckered, as well as discolouring areas, leaving yellowish-green or red patches. The aphids then fly to hedge woundwort, a wildflower, for the rest of the summer, but ...

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, including aphids and codling moth...

Nesting female bees cut out immediately obvious elliptical shapes from the edges of a leaf to make their cells for laying eggs. Since one female might need 20 or so cells, that's a lot of leaf cutting, particularly when the bee keeps returning to the same plant. It's only a signi...

Pea and bean weevils are a nuisance but rarely a major problem on the veg patch. The larvae live in the soil and feed on the root nodules. Then when the adults emerge in June and July, they climb up the plants and eat the edges of the leaves. Thankfully, these 4mm-long, brown, sn...

The rose leaf rolling sawfly injects a chemical into young rose leaves to cause them to curl protectively around her eggs. Within a week the eggs hatch into green caterpillars that start to eat their home. In mid-summer, leaving behind skeletonised foliage, they crawl down into t...

The mint leaf beetle, Chrysolina herbacea is a native, iridescent green beetle that feeds on the leaves of the mint family in the south of the UK. Both the adults and their fat, black larvae feast on the foliage.Holes in leaves, made by iridescent green beetles and their and fat,...