Apple Pest Management for Home Gardeners

Patricia S. McManus, Daniel L. Mahr, Teryl R. Roper, UW-Extension Revised:  3/17/2011 Item number:  A2179 Home gardens usually contain only a few apple trees, making it feasible to limit pesticide use and still produce a healthy crop of apples. This extensively updated publication outlines the basic principles of pest management. Learn which non-chemical strategies are […]

Bagging Apples for Insect and Disease Control

Producing high quality apples in home gardens can be challenging due to damage caused by insects and fungal diseases. Insects and wind-borne fungal spores cause damage when contacting developing fruit. An effective way to produce high-quality fruit organically, without the need for spraying, is placing developing fruit in bags. This factsheet describes the process.

Fruit and Frost

Because of our climate, Wisconsin always has a risk of spring frosts. Temperatures below 28°F will injure or kill flowers or immature fruit. This factsheet will briefly outline critical temperatures at different stages of flower development, and describe how a gardener might protect against late season frosts.

Raspberry Disorder: Fire Blight

Author(s): M.F. Heimann, S.N. Jeffers A serious disease of apple and pear trees in the Midwest, fire blight also affects many other members of the rose family, including raspberry. Although still relatively rare on raspberries, this disease has become increasingly common on certain red raspberry cultivars in Wisconsin. Find out hot to spot, prevent, and […]

Armillaria Root Disease

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 […]

Gymnosporangium Rusts

Authors: Brian Hudelson, UW-Madison Plant Pathology Last Revised: 01/23/2019 X-number: XHT1009 What are Gymnosporangium rusts? Gymnosporangium rusts are a group of closely related diseases caused by fungi that infect both junipers (in particular red cedar) and woody plants in the rose family (such as, but not limited to, apple, crabapple, hawthorn and quince). These fungi […]

Gray Mold (Botrytis Blight)

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 […]

Chlorosis

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, […]

Degree Day Calculation

Karen Delahaut, UW-Madison Fresh Market Vegetable Program Revised:  8/6/2012 Item number:  XHT1086 Indicator plants are not always suitable for the timing of pest management practices.  You may not have the critical indicator plant  nearby to time local activities, or there may not be a good indicator plant for a particular pest’s crucial life stage.  Another […]

Anthracnose

Brian Hudelson, UW-Madison Plant Pathology Revised:  3/10/2012 Item number:  XHT1001 What is anthracnose?  Anthracnose is the name of several common fungal diseases that affect the foliage of woody ornamentals in Wisconsin.  Trees that are most commonly and severely affected by anthracnose include ash, maple, white oak, sycamore, and walnut.  Anthracnose typically affects young leaf tissue. […]

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