Small, quick flying insects, usually green or brown and feeding causes mottling of the leaves.
New growth appears distorted with a whitish substance in the leaf axils.
Can start with small purplish spots. Develops mature bright yellow, powdery spores on leaves and, sometimes, fruit. Leaves can become contorted and purplish-red pigmentation can occur. Soft leaves can die.
New growth may have dimpling in leaves. Leaves can be distorted and terminal shoots dieback. Leaf defoliation of some types of psylid attack may occur. Leaves may be discoloured.
Small white, pink, black or brown patches or raised bumps on leaves and stems.
Black sooty growth covering any part of the leaf, stem or branch of plants. Caused by the presences of sap sucking insects on the plants such as aphids, scale and mealybugs.