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of these are available as biological controls, however, they need time to tackle the problem, so don't expect them to hoover up the aphids overnight. Small clusters of aphids can be squished with your fingers or washed off with a strong jet of water. Insecticidal soap

, including aphids and codling moths, which attack apple and pear trees. You often find earwigs in holes in fruit, but they rarely caused the initial damage.Earwigs like to nibble soft, young leaves and petals, leaving large ragged holes. Older leaves may

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

,greenhouse and house plantssummer, autumn, winterMore common garden pestsAphidsPhormium mealybugThripsWhitefly

, thus exposing the bugs to predators. But they're not all bad, as some capsid bugs feed on small pests.a wide range of plants, including chrysanthemums, dahlias, fuchsias, apples, beans and potatoesspring, summerMore common garden pestsLeaf miner flyAphids

Scarlet beetles (6mm - 8mm long) with black heads eat the leaves, flowers and seedpods of lilies and other members of the lily family. Don't mistake them for ladybirds. Between April and September the beetles lay eggs on the undersides of leaves