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New leaves distorted and yellow, foliage and stems covered in sooty mould, insects crowded on young leaves and shoots.
Small and large irregular holes and caterpillar droppings.
Beetles chew leaves and stems. Some beetles, like hibiscus flower beetle, chew holes in flower petals.
Thrips suck the sap, leaving a white mottled appearance on leaves. Other symptoms are browning on petals and fruit, and flower drop.