Spruce Spider Mite

Spruce spider mites can attack a number of conifers including spruce, hemlock, arborvitae, larch and juniper. Learn about the life cycle and management techniques in this factsheet.

Forcing Bulbs

Ann Joy and Brian Hudelson, UW-Madison Plant Pathology Revised:  3/9/2012 Item number:  XHT1144 Wisconsin gardeners do not have to give up growing flowers during the long winter months.  Many plants grown from bulbs (also those grown from corms or rhizomes) can be forced to bloom indoors during the winter by giving them the combination of […]

Phomopsis Tip Blight

Phomopsis tip blight is one of the most common fungal disease of conifers, including junipers, arborvitae, firs, larch and jack pine. This factsheet describes symptoms and management of this tip blight.

Pine Root Collar Weevil

Pine root colar weevil is a destructive pest of pines, including Austrian, Scots, red and Eastern white. Learn synptoms and how to protect your trees in this factsheet.

Cytospora Canker

Cytospora canker is one of themost common fungal diseases of Colorado blue spruce, and can also affect other spruce and firs. Learn about symptoms and management in this factsheet.

Diplodia Shoot Blight and Canker

Diplodia shoot blight and canker is one of the most common fungal diseases of Austrian pine in Wisconsin, and can also affect other pines as well as other conifers including cedars, cypresses, firs, junipers and spruces. Learn more here.

Ips Bark Beetle

Ips bark beetle, also known as the pine engraver, is an insect that attacks and kills weak, stressed, declining and dying pine and spruce trees. Identification and management are covered in this fact sheet.

Dothistroma Needle Blight

A common needle blight, Dothistroma can affect over 30 species of pine trees, especially Austrian pine. Learn symptoms and management of this disease in this facthsheet.

Swiss Needle Cast

Swiss needle cast is a fungal disease of Douglas fir. Symptoms and management of this disease are described in this factsheet.

Weir’s Cushion Rust of Spruces

Weir’s cushion rust is a needle disease that disfigures and reduces growth of spruce trees. Learn to identify and avoid problems with Weir’s cushion rust in this factsheet.

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