Webworms

The term webworm is used to describe several insects whose caterpillars use silk to join plant parts together to form protective nests. Learn about two webworms found in Wisconsin in this factsheet.

Spongy Moth

Spongy moth (formerly gypsy moth) is a destructive insect when the caterpillars occur in large numbers and defoliate trees. This factsheet will help with identification and management of this pest.

Aphids

Aphids are soft-bodied, insects that feed on plant sap and subsequently excrete a sugary substance that can attract ants as well as support a saprophytic fungus called sooty mold. Learn about aphids found in home gardens in this factsheet.

Viburnum Leaf Beetle

The viburnum leaf beetle (VLB), Pyrrhalta viburni, is an invasive insect that feeds exclusively on and can significantly damage Viburnum species. Identification and control are described in this factsheet.

Organic and Reduced-Risk Lawn Care

More and more people wish to move in the direction of creating an organic lawn, or what some people call a natural lawn. This publication helps them decide which route to follow: organic lawn care or reduced-risk lawn care.

Aphids, in-depth

Aphids are really fascinating insects, with bizarre lifestyles and eating habits Learn more about this large group of insects and how to manage them in the garden in this article…

Protecting Your Tree From Emerald Ash Borer

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.

Homeowner Guide to Emerald Ash Borer Insecticide Treatments

This factsheet describes considerations and products for treating ash trees with insecticides to control Emerald Ash Borer.

Home Landscape Insecticides

This factsheet describes active ingredients available for homeowners and the landscape insects they control.

Degree Day Calculation

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.