Predation and Control
Natural predators, such as ladybirds/ladybugs, hoverfly and lacewing larvae, spiders and mites do reduce adelgid and aphid populations to some degree.4
Spraying against these adelgids with chemicals is possible, and can be done in either the fall or the early spring. Foliar treatments of carbaryl (Sevin) and permethrin have been most effective in Colorado State University trials. Horticultural oils, which have also been very effective, can cause temporary discoloration of spruce needles.2
Read more about this topic: Gall Adelgid
Famous quotes containing the word control:
“In view of the fact that the number of people living too long has risen catastrophically and still continues to rise.... Question: Must we live as long as modern medicine enables us to?... We control our entry into life, it is time we began to control our exit.”
—Max Frisch (1911–1991)