Aphids cluster and feed on new growth. Distortion of new growth is
often the first noticeable symptom on pittosporum. Aphids have small
pear-shaped bodies with paired cornicles. They may or may not have wings. Sooty
mold grows on honeydew excreted by the aphids.
COMMENTS on disease
Aphids are usually most
numerous in the spring, but may be present throughout the growing season.
Aphid “mummies” are a sign
that natural biological control is occurring. High aphid populations may be
treated with insecticidal soaps, oils, or approved insecticides.