Mealy Cabbage Aphids are sap-sucking insects with a grey, powdery and mealy appearance. They live in dense clusters on cabbages and other Brassica species.
Dense clusters of Mealy Cabbage Aphids will be visible on host plants. You might find them on the flowering stems and undersides of leaves.
Initial symptoms involve patches of discolouration on leaves. Young plants may experience stunted growth and in more extreme infestations, plant death.
Older plants can tolerate a Cabbage Aphid attack, and although it looks aesthetically unpleasing, the plant will usually survive and produce a crop.