scale of Pittosporum tobira

Disease Information

Cottony cushion scale

 Symptoms and damage

 The bodies of the mature scale insects are covered with white or yellow wax. They congregate and feed on the stems of the plants, and are relatively immobile. Large fluted egg sacs (twice the body size) each contain 1000 red eggs 2 which hatch out into bright red nymphs. The nymphs disperse to find new feeding sites. Prolific sooty mold, reduced plant vigor, and twig dieback are symptoms of advanced infestations.

 COMMENTS on disease

 Shade may be a factor.


Small infestations may be pruned out. Encourage natural biological controls. Apply oil or an approved insecticide if necessary.

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