Choosing Trees and Shrubs Under Powerlines

Laura Jull, UW-Extension Revised:  11/2/2011 Item number:  MG&E website This website features small trees that can be planted underneath or near powerlines, in addition to larger shrubs that can be used for screening. The search data includes plants for sun, partial shade or shade, wet, moist or dry soil, plants with showy flowers, fruit or […]

Swiss Needle Cast

Ann Joy and Brian Hudelson, UW-Madison Plant Pathology Revised:  8/13/2012 Item number:  XHT1148 What is Swiss needle cast?  Swiss needle cast is a fungal disease of Douglas-fir.  This tree is native to the Rocky Mountains and the Pacific Coast, but has traditionally been grown in Wisconsin as a landscape ornamental and as a Christmas tree.  […]

Volutella Blight

Gina Muscato and Brian Hudelson, UW-Madison Plant Pathology Revised:  8/13/2012 Item number:  XHT1191 What is Volutella blight?  Volutella blight is a common and potentially lethal disease of Japanese pachysandra (Pachysandra terminalis), an evergreen, semi-woody groundcover that is grown in shade gardens throughout hardiness zones 4 and 5 in Wisconsin.  Volutella blight can severely limit the […]

Weir’s Cushion Rust of Spruces

Glen R. Stanosz, UW Madison Plant Pathology, and Forest Ecology and Management Revised:  8/13/2012 Item number:  XHT1119 What is Weir’s cushion rust? Weir’s cushion rust is a needle disease that disfigures and reduces growth of spruce trees (Picea spp.) of all ages.  This disease has been known in both eastern and western regions of the […]

White Pine Blister Rust

Joseph Schwartz, UW-Madison Forest Ecology and Management and Glen R. Stanosz, Ph. D., UW Madison Plant Pathology Revised:  8/13/2012 Item number:  XHT1118 What is white pine blister rust? White pine blister rust is a serious, tree-killing disease of eastern white pine and its close relatives (pines with needles in bundles of five).  This disease is […]

Wood Mulch and Tree Health

Jane Cummings-Carlson and John Kyhl, Wisconsin Department of Natural Resources; Gina Foreman and Brian Hudelson, UW-Madison Plant Pathology Revised:  8/13/2012 Item number:  XHT1121 What are the benefits of wood mulch? Wood mulch is typically available as chipped wood, or shredded or chunked bark, and can contribute to tree health in many ways.  When high quality, […]

Root Rots in the Garden

Brian Hudelson, UW-Madison Plant Pathology and Laura Jull, UW-Madison Horticulture Revised:  5/20/2011 Item number:  XHT1072 What is root rot? Root rot is a general term that describes any disease where the pathogen (causal organism) attacks and leads to the deterioration of a plant’s root system.  Most plants are susceptible to root rots, including both woody […]

Bird’s Nest Fungi

Amy Gibbs* and Brian Hudelson, UW-Madison Plant Pathology Revised:  5/31/2005 Item number:  XHT1105 What are bird’s nest fungi?  Bird’s nest fungi are a group of organisms named for their resemblance to miniature bird’s nests.  These fungi can be found all over the world, growing and reproducing on decomposing organic matter.  In temperate regions, bird’s nest […]

Mealybugs

Karen Delahaut, formerly UW-Madison Fresh Market Vegetable Program Revised:  4/26/2004 Item number:  XHT1129 Mealybugs are slow-moving, small, oval insects that are covered with a white, cottony wax.  They are tropical insects that are typically only found on perennial foliage plants, and rarely on flowering or bedding plants.  They can infest all plant parts including the […]

Western Conifer Seed Bug

Phil Pellitteri, UW Insect Diagnostic Lab Revised:  4/27/2004 Item number:  XHT1052 Western conifer seed bugs belong to the leaf-footed bug family Coreiidae.  Adults are 3∕4 of an inch long, elongate, reddish to dull brown with a faint, white zigzag straight line across the center of the wings.  They have long, thin antennae and hind legs […]

Cicada Killer Wasps

Phil Pellitteri, UW Insect Diagnostic Lab Revised:  1/4/2011 Item number:  XHT1198 Cicada killer wasps have become very common in the southern half of Wisconsin.  These solitary wasps are up to 1½ inches long, and their black and yellow coloring makes them look like giant yellow jackets. Life Cycle:  Adult cicada killer wasps appear from mid-July […]

Zimmerman Pine Moth

Phil Pellitteri, UW Insect Diagnostic Lab, UW-Extension Revised:  8/13/2012 Item number:  XHT1164 Zimmerman pine moth (Dioryctria zimmermani) was first detected in the US in 1879, and has subsequently been found and is established throughout the northern US east of the Rocky Mountains.  Austrian and Scots pines are preferred hosts of Zimmerman pine moth.  However Eastern […]

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