MADISON (WKOW) -- Small in size; but when large in numbers, oyster shell scale insects can wreak havoc on many of our trees and shrubs.
They feed by sucking plant juices from the cells below the bark along the trunk and stems. When populations are high, it can cause branches to die and the plants to decline.
You can control small infestations with a small plastic pad. Gently rub the scale covered trunks and branches to remove old scale coverings and eggs.
Treat with an eco-friendly product, like insecticidal soap or ultra-fine year-round spray oil.
Lightweight oils can be used in the summer. They cover and smother the insects.
5727 Tokay Blvd., Madison, WI 53719
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