Oak Wilt
Oak wilt can be lethal, especially to oaks in red oak group. Learn about this disease of oaks, the life cycle and management options.
Deciduous Trees & Shrubs
Trees and shrubs are the backbone of our landscapes. Properly placed and well-maintained landscape plants help conserve energy, provide shade, increase the property values, attract wildlife, offer privacy and help us create peaceful outdoor living environments. Many trees and shrubs also exhibit showy flowers, vibrant fall foliage colors, and edible fruits. Learn from our publications and fact sheets about selecting, planting and maintaining trees and shrubs in Wisconsin landscapes.
Featured Tree & Shrub Articles
Choosing the Right Landscape Plants: Factors to Consider
Plant selection is one of the most important decisions a gardener, landscaper or designer makes. Learn more about selecting plants in this publication.
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.
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Articles
Phenology
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.
Powdery Mildew – Trees & Shrubs
Powdery mildew is a disease that occurs on the above-ground parts of many deciduous trees and shrubs, as well as herbaceous ornamental plants, indoor houseplants, and many agricultural crops. Learn more in this factsheet.
Scales
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.
Deciduous Trees Disorder: Springtime Weather Injury to Foliage
Springtime weather injury can cause misleading symptoms on foliage. This fact sheet describes symptoms and steps to minimize the likelihood of injury.
Top Ornamental Crabapples for Wisconsin
This factsheet provides information on some of the most ornamental, disease resistant crabapples available for landscaping in Wisconsin.
Anthracnose
Anthracnose is the name of several common fungal diseases that affect the foliage of woody ornamentals in Wisconsin. This factsheet describes symptoms and management.
Winter Salt Injury and Salt-tolerant Landscape Plants
Learn to recognize and prevent plant damage caused by deicing salts. Learn about alternatives to rock salt and which plants are salt-tolerant.
Black Knot, Apiosporina morbosa
Large swollen dark-colored growths on plum and cherry trees are caused by a fungal pathogen that causes the disease known as black knot. To learn more about this disease and how to manage it, read this article.
Lichens
Lichens are organisms that arise from mutually beneficial interactions between certain fungi and algae. Learn about these harmless, and very common organisms in this factsheet.
Powdery Mildew Remedies
Powdery Mildew is a disease that affects a lot of different plants. On most plants, it’s harmless. Find out if various home remedies you’ve heard about are effective in this video!
Twospotted Spider Mite, Tetranychus urticae
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…
