Cottony Maple Scale

By The Old House Web

Cottony Maple Scale

List of files and visuals associated with this text.

This scale looks like cotton balls attached to the stem.

The insect overwinters as a female scale. In spring the female matures and lays eggs. The eggs hatch in late June and July and the crawlers move to the leaves. The crawlers insert their mouthparts and begin to suck sap from the leaves. The females move back to the branches before the leaves drop.

The insect injures the plant by sucking the sap. The insects will excrete honeydew and this can support the growth of black sooty mold. Heavy infestations can cause leaf drop.

Crawlers can be controlled with sprays of Sevin or Orthene. Overwintering stages are controlled with dormant oil spray.

Visuals associated with this text.

Visual title - Visual size Visual title - Visual size
Cottony maple scale - 46K Cottony maple scale - 46K
Cottony maple scale on maple - 53K
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