Controlling greenfly Follow these steps to keep your plants free from aphids. The first sign of aphids is the black sooty mould, which grows on the sticky honeydew and begins to appear on leaves lower down the plant. Once symptoms, such as mottled leaves, are seen it is best to remove infected specimens to help prevent the disease spreading.
Control is possible by either chemical or organic methods.
Natural methods of control A natural alternative to spraying an aphid colony with chemicals is to dislodge them with a strong jet of water from a hose. Insects, hoverflies, ladybirds, lacewings and many types of bird will also feed on aphid. Adult ladybirds are as useful as their larvae for preying on aphids Controlling greenfly Greenfly damage Natural methods of control Effective chemical control for aphids Aphid bodyguards Search for plants by plant name or sun exposure and soil type. An in-depth look at some garden favourites. Ask our experts for their advice or read their comments about other gardening problems.