Armillaria Root Disease

Armillaria root disease, a/k/a shoestring root rot, can affect most conifer and hardwood species, and is an often lethal disease of tree and shrub roots and lower stems. Learn more in this factsheet.

Woody Ornamentals Pest Management in Wisconsin

An indispensable resource for nursery growers, this publication identifies pests of trees and shrubs in the state plus the products available for their control.

Summer Flowering Trees, Shrubs and Vines

Ideas and information about woody plants that flower in summer, to create a landscape with year-round interest.

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…

Deciduous Tree Galls

Galls are abnormal growths on plants that can result from the feeding of living organisms such as bacteria, fungi, nematodes, insects and mites. Learn about common galls in this factsheet.

Maple Gall Mites (Eriophyidae)

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.

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.

Is My Ash Tree Worth Treating for Emerald Ash Borer?

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.

Organic Lawn Fertilization

Interest in organic, sustainable gardening has grown to include lawn care practices, including use of organic fertilizers derived from natural sources. Learn how organic and conventional fertilizers differ here.