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Aphids

Aphids

Symptoms

Most commonly thought of as the small, fat, green insects covering roses. However, aphids can also be black, yellow, pink, greyish-white and brown. They are all about 2mm long, round and full of sap.

Harm

Bad infestations can reduce the vigour of a plant and leave it vulnerable to attack by other pests and diseases. Virus diseases can be spread by aphids as they move from one infected plant to another. Aphids feed by sticking their mouth parts straight into the plants veins. Any excess sap they cannot consume simply spills out around them. This is why leaves often feel sticky. This sap is often colonised by black sooty mould which can smother the upper surfaces of the leaves and reduces the plants ability to make food.

Symptoms

Most commonly thought of as the small, fat, green insects covering roses. However, aphids can also be black, yellow, pink, greyish-white and brown. They are all about 2mm long, round and full of sap.

Treatment

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