R. Chris Williamson, UW-Extension Turf and Ornamental Specialist Revised: 8/13/2012 Item number: XHT1068 Adult periodical cicadas (Magicicada spp.) are black and have reddish-orange eyes and legs, and have clear wings with orange veins that are positioned over their bodies like a roof or canopy. Male cicadas typically make a loud buzzing noise or squawk when […]
Jim Olis* and Brian Hudelson, UW-Madison Plant Pathology *Completed as partial fulfillment of the requirements for a BS in Plant Pathology at the University of Wisconsin Madison. Revised: 8/6/2012 Item number: XHT1077 What is downy mildew? The downy mildews are a group of fungal diseases that cause destruction of the leaves, stems, flowers and fruits […]
If deer visit your property, you’ve likely already experienced the frustration of having landscape plants destroyed overnight. Before planting (or replanting), check out this list of trees, shrubs, flowers, herbs, and grasses that deer tend to avoid.
Brian Hudelson, UW-Madison Plant Pathology Revised: 5/11/2010 Item number: XHT1004 What is herbicide damage? Herbicide damage is any adverse, undesired effect on a plant that is caused by exposure of that plant to a pesticide designed for weed control (i.e., a herbicide). Any plant can be subject to this problem. What does herbicide damage […]
Jeffory Schraufnagel*, Milwaukee Area Technical College, Brian Hudelson, UW-Madison Plant Pathology Revised: 5/11/2010 Item number: XHT1122 What is gray mold? Gray mold (or Botrytis blight) is a common and often serious fungal disease that can affect plants of all kinds. Gray mold is a particularly serious problem on flowering plants and those plants grown in […]
Brian Hudelson, UW-Madison Plant Pathology, UW-Extension Revised: 4/28/2012 Item number: XHT1123 What is Guignardia leaf spot? Guignardia leaf spot is a common fungal leaf spot that affects vining plants such as Boston ivy and Virginia-creeper. The pathogen that causes Guignardia leaf spot also causes a leaf spot and fruit rot of grape called black rot. […]
Brian Hudelson, UW-Madison Plant Pathology, UW-Extension Revised: 1/8/2012 Item number: XHT1002 What is chlorosis? Chlorosis is a common nutritional disorder of many woody ornamentals in Wisconsin, particularly in the southern and eastern parts of the state. Pin oaks are most commonly affected by chlorosis, although many other trees and shrubs (e.g., white oak, red maple, […]
Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised: 8/13/2012 Item number: XHT1096 Recently, several commonly-used insecticides for the control of insects on woody landscape plants have been taken off the market. As a result, it’s becoming ever more challenging for home gardeners to find suitable insecticide products at garden centers, discount stores, and hardware stores. […]
Michael Amman, UW-Madison Forest Ecology and Management and Glen R. Stanosz, Ph. D., UW-Madison Plant Pathology Revised: 8/6/2012 Item number: XHT1120 What is Armillaria root disease? Armillaria root disease, also known as shoestring root rot, is an often lethal disease of tree and shrub roots and lower stems. It can affect almost any conifer or […]
Some plants can survive colder winter temperatures than others. Zone of cold hardiness refers to the plant’s ability to survive the winter. It plays a key factor in selecting landscape plants for the region. USDA has classified the entire United States into 13 plant hardiness zones based on their average, annual minimum temperature during 30 […]
Micro irrigation has numerous advantages over sprinkler irrigation and can be used in greenhouses, orchards, vineyards, fields, lawns, and gardens. Learn about the components that comprise a micro irrigation system along with the benefits (reduced water usage, reduced potential for foliar diseases, reduced energy costs, etc.) and drawbacks these lower pressure systems provide.
Floating row cover is a great addition to any vegetable garden, as it can be used for several different purposes and is easy to use. Learn more about these specially designed fabrics in this article.