(1) Sap-sucking insects such as aphids carry viruses between plants.(2) Keep a look out for aphids on tender young growth or on plants that are stressed and unhappy.(3) Using an oil spray will get rid of aphids , lacebugs and spider mites quickly.(4) As a group, aphids attack a plant by sucking its fluids from tender new growth.(5) The gardener's friend, the busy little ladybird helps by eating aphids and greenfly.