Often called plant lice, aphids are small, soft-bodied insects. They range in color from black to green to yellow. Their numbers may greatly increase in a short time and crowding stimulates the production of winged forms. They may cover the entire surface of a leaf or stem. They can be vectors of viruses. Encourage natural predators, such as ladybird beetles or lacewing larvae, to help keep their populations in check. Lacewing eggs can be purchased from seed companies. These eggs soon hatch and yield good aphid control. There are also chemicals that can be used to control them.

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