Inside little green or red bumps or other weird growths on maple leaves are tiny eriophyid mites, feeding on the developing gall tissue. Learn more about these mites and what to do about them in this article on maple gall mites.
EAB was discovered in Wisconsin in 2008 and has been slowly spreading ever since. In this video, entomologists demonstrate how homeowners can protect their trees from this insect.
When should I treat my ash tree for EAB? This factsheet addresses some of the most frequently asked questions regarding the treatment of ash trees for EAB, and the removal and disposal of infested trees.
This factsheet describes considerations and products for treating ash trees with insecticides to control Emerald Ash Borer.
This factsheet describes active ingredients available for homeowners and the landscape insects they control.
This factsheet lists degree days for emergence and hatching of a wide variety of landscape insect pests.
Degree Days incorporate temperature and time to quantify the rate of plant and insect development. This useful tool helps predict events such as flowering, harvest, and pest outbreaks.
Phenology is a branch of science that studies the life cycles of plants and animals with seasonal changes and weather. Learn more in this factsheet.
There are many species of scales and they are difficult to control because of their protective covering. Learn to identify and manage scales in this factsheet.
The most common spider mite, the twospotted spider mite, is a general feeder that attacks a wide variety of plants. Learn about its biology and management in this article…
Scale insects are often overlooked because they are immobile and look like small bumps that just might be plant parts. Learn more about this group of inconspicuous and atypical insects in this article…
Major branch dieback, plant decline, and plant death of Viburnum species are commonly associated with the caterpillars of clearwing borer moths. Learn symptoms and management in this factsheet.
