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Tree Insects
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Updated: May 12, 2023
Leafhoppers
Have you noticed tiny insects jumping or hopping on your garden plants or trees? Leafhoppers are a category of insects that can cause tiny spots on leaves and spread plant diseases. Their feeding can cause leaf yellowing, leaf curling, and in some cases, leaf death.
Updated: May 9, 2023
Sawflies
Sawfly damage is done by larvae that resemble caterpillars. These insects feed in groups and can be found chewing the leaves of a variety of plants including roses, dogwoods, hibiscus, columbine, birch, and pines.
Updated: May 9, 2023
Boxelder Bugs
Boxelder bugs are a nuisance pest that sneaks into homes in late fall seeking a hiding place.
Updated: May 3, 2023
Planthoppers
Planthoppers may be found on a variety of garden plants. Most species are just a temporary nuisance and do not require control.
Updated: March 30, 2023
Ornamental Cherry Trees: Identify and Manage Problems
Prevent, diagnose and manage ornamental cherry tree problems
Updated: March 27, 2023
Elm Leaf Beetle
Holes in elm and zelkova leaves are eaten by 1/4 inch long elm leaf beetle adults and 1/2 inch long larvae.
Updated: March 1, 2023
Fall Webworm on Trees
Fall webworms spin silken nests surrounding tree branches on many shade trees in late summer. These are not the same as bagworms or Eastern tent caterpillars, both of which are a different species.
Updated: March 1, 2023
Tuliptree Scale
Tuliptree scale (Toumeyella liriodendri) is a native type of soft scale insect.
Updated: March 1, 2023
Cankerworm on Trees
Spring and fall cankerworms cause feeding damage on shade trees.
Updated: March 1, 2023
Understanding Degree Days
Degree Days (DD), also termed Growing Degree Days (GDD), measure how much warmth above a certain threshold has accumulated since the beginning of the year.
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