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Azalea Cottony Scale


Azalea Cottony Scale

Usually appear in

Spring and Summer

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Caused By:-     The Scale Insect Pulvinaria floccifera


Azalea Cottony Scale can infest holly, yew, euonymus, maple, and other plants. Females are approximately 1/8-inch long with white felt-like sacs that are secreted in April/May which is where the eggs are laid in the spring and hatch from June to July. Compared to bark scale they prefer to attack the leaves. They suck the sap from the tree and weaken it. Infested plants usually appear chlorotic with weak growth. the plants are often covered with sooty mould which is a black fungus that grows on the honeydew excreted by the scales as they feed. Some twigs may eventually twigs may die back. Picture by John A. Weidhass, Virginia Polytechnic Institute and State University,
See these other Scale insects Azalea Bark, Beech Bark, Brown, Eucalyptus Gumtree, Euonymus Mussel, Hemispherical, Horse Chestnut, Hydrangea, Juniper, Mussel, Oleander, San Jose, Scale, Soft, Viburnum Cushion, Wisteria, Wooly Vine.


A wash with oily insecticides or a soap wash will kill pests and eggs.

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