Japanese Beetle

The Japanese beetle, Popillia japonica, is a significant pest of landscape trees and shrubs, vegetable and fruit crops, and turfgrass in the eastern United States. This factsheet describes the lifecycle of this destructive beetle along with management and control options.

Common leaf spot of Strawberry

Common leaf spot of strawberry is a common fungal leaf disease that affects both wild and cultivated strawberries throughout the world. Once the most economically important strawberry disease, the use of resistant strawberry varieties/cultivars and improvements in growing methods have been effective in managing the disease. Learn about this foliar disease and its potential impact in your strawberry patch.

Cane Blight

David S. Jones*, UW-Madison Plant Pathology Item Number: XHT 1242 Revised:  November 23, 2015 What is cane blight?  Cane blight is a fungal disease that affects the health of canes (i.e., stems) of cultivated and wild Rubus species (e.g., raspberries and blackberries), wherever they are grown.  Black and purple raspberries appear to be more susceptible […]

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 […]

Deciduous Tree and Shrub Disorder: Skeletonizing by Rose Chafer

Author(s): R.C. Williamson, C.F. Koval Skeletonizing of the leaves of roses, raspberries, grapes, fruit trees, and many other cultivated trees and shrubs may be caused by the adult rose chafer, Macrodactylus subspinosus (Fabricius). Adult beetles are attracted to flower blossoms, particularly roses and peonies. Damage occurs in June and tends to be most severe in […]

Spotted Wing Drosophila

Christelle Guédot, UW-Madison Entomology Revised: 01/09/2015 Item number: XHT1237 Spotted wing Drosophila (SWD), Drosophila suzukii, is an invasive vinegar fly native to Southeast Asia.  It became established in Hawaii during the 1980’s, and was first discovered in the continental United States in California in 2008.  SWD quickly spread throughout the Pacific Northwest and Canada, and […]

Root-Knot Nematode

Root-knot nematodes (Meloidogyne spp.) are small, soilborne, worm-like organisms that infect many agricultural and horticultural plants. This publication describes the symptoms, management and control of root-knot nematodes in Wisconsin.

Foliar Nematodes

Foliar nematodes are microscopic worm-like organisms in the genus Aphelenchoides. They live in and on the leaves (and other above-ground plants parts) of over 450 plant species in more than 75 plant families. They are commonly found on hostas, but can affect other herbaceous ornamentals. Learn what to look for and how to manage foliar nematodes in this factsheet.

Angular Leaf Spot of Strawberry

Isael Rubio*, UW-Madison Plant Pathology Revised:  4/1/2014 Item number:  XHT1227 What is angular leaf spot?  Angular leaf spot is a severe bacterial disease that can adversely affect strawberries wherever they are grown, potentially causing yield losses of up to 75%.  The disease appears to have originated in the U.S and was first described in Minnesota […]

Brown Marmorated Stink Bug

Christelle Guédot, UW-Madison Entomology and Bryan Jensen, UW IPM Program Revised:  3/26/2014 Item number:  XHT1236 Brown marmorated stink bug (BMSB), Halymorpha halys, is an exotic, invasive insect native to Asia, including China, Japan, Korea and Taiwan.  BMSB was first confirmed in the United States in 2001 although an unconfirmed sighting was reported in Pennsylvania in […]

Raspberry Anthracnose

Chen Zhang*, UW-Madison Plant Pathology Revised:  3/5/2014 Item number:  XHT1232 What is raspberry anthracnose?  Anthracnose is a common disease that causes significant reductions of yield and fruit quality on raspberries in the United States.  Black and purple raspberries (oftentimes misidentified as blackberries) are particularly susceptible to anthracnose, while red raspberries are less susceptible to the […]

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