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Dodge City Daily Globe - Dodge City, KS
  • Check Plants for Scale Insects

  • The dormant season is a good time to check woody plants for scale insect infestations. I have been asked questions about scale insects during the growing season and many times it is too late to control them. This time of year, deciduous plants do not have leaves, so scale are more easily seen. If an infestation is detected, ...
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  • The dormant season is a good time to check woody plants for scale insect infestations. I have been asked questions about scale insects during the growing season and many times it is too late to control them.  This time of year, deciduous plants do not have leaves, so scale are more easily seen. If an infestation is detected, make plans to apply a dormant oil for control by March 1. Be sure temperature is 40 degrees or above before spraying.
    Scale insects are easily overlooked because they are small and immobile most of their lives, and they do not resemble most other insects. Many of them resemble small shells that areoval or circular, but some have more unusual shapes like oyster shells. Their coloring varies, but can include white, tan, and brown.
    Plants that should be inspected for scales include apples, pears, other fruit trees,
    bush fruits, lilac, crabapple, oak, ash, elm, lilac, maple, linden, arborvitae, juniper, pine, spruce and yew.  Euonymus is especially noted for having scale problems and that is the one I receive the most calls on. Plants are not usually harmed if only a few scales are present. But scale population can increase dramatically during the growing season. Heavy scale infestations can damage fruit crops, destroy branches and kill entire plants.
    For more information on controlling scale insects, visit us online at www.ford.ksu.edu

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