Control balsam twig aphids in Christmas trees by targeting stem mothers

Balsam twig aphid feeding causes new growth to curl and become distorted. Time insecticides to control the stem mother.

Recently deposited overwintering egg, which will darken with time. Photo credit: Rayanne Lehman, Pennsylvania Department of Agriculture, Bugwood.org

Recently deposited overwintering egg, which will darken with time. Photo credit: Rayanne Lehman, Pennsylvania Department of Agriculture, Bugwood.org

Balsam twig aphid overwintering eggs will soon hatch and quickly mature into “stem mothers.” The key to managing this aphid is to target insecticide applications to control the “stem mothers” before they can produce offspring. For more information on how to do so, see “Target stem mothers to control balsam twig aphids in Christmas trees” from 2013 by Michigan State University Extension.

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