Contact Your County Office

Translation Disclaimer

 close

Users agree that automated translations may not effectively convert the intended design, meaning, and/or context of the website, may not translate images or PDF content, and may not take into account regional language differences. Any person that uses the translated site does so at that person’s own risk. UGA Extension is not responsible for any damages, costs, liability, or risk associated with any use, functionality, and/or content of the website translations.

For more information, visit the Language Translation page.

Landscape Pest Management
UGA Extension

Cottony Maple Scale

Cottony maple scale insects all over a green stem


Adult females are about 3/16 inch long. They are black, flat, and oval. The 1/4-inch white cottony ovisac, or egg sac, is deposited on bark. Crawlers appear in June and immatures in summer on the underside of leaves. There is one generation a year. Immatures overwinter on twigs. Preferred hosts include maple, elm, hawthorn, dogwood, sycamore, poplar, and linden.

Look for white ovisacs on bark in early spring. During the summer, look on underside of leaves for flat, yellow immatures sucking sap from leaf veins where honeydew and sooty mold are found on the host plant.

Apply dormant oils to bark to kill overwintering nymphs. Horticultural oil or insecticidal soap can be applied to leaves during the summer to control crawlers.