Trees & Shrubs

Author(s) Laura G. Jull Properly placed and maintained landscape plants can increase the value of real estate. However, poor plant choices can be...

Author(s) Laura G. Jull Lilacs for Cold Climates describes the best of the top-rated cold-weather cultivars. These are the gems that will survive ...

Author(s) Scott R. Craven, Robert Ellarson Find out how to create a haven for the birds' food, shelter, and cover with the shrubs and trees you p...

Author(s) C. F. Koval, S. W. Binnie The eastern tent caterpillar is native to North America, and records of its existence go back as far as 1646. ...

Author(s) Scott Sanford, John Panuska Micro irrigation has numerous advantages over sprinkler irrigation and can be used in greenhouses, orchards...

Author(s) R. Chris Williamson, Andrea Diss The gypsy moth caterpillar has a distinctively bristly body, with five pairs of blue warts followed by ...

Author(s) M. F. Heimann, P. J. Pellitteri Despite their name, evergreen needles do not stay green forever. Older, inner needles discolor and drop ...

Author(s) Laura G. Jull Plant roots, like people, need oxygen for respiration. That why a flood can stress a plant and even, if roots are submerge...

Author(s) M. F. Heimann, G. R. Stanosz Rhizosphaera needle cast occurs throughout the state of Wisconsin but infects only certain conifer species....

Author(s) M.F. Heimann, G.R. Stanosz In Wisconsin, Cytospora canker is especially damaging to Colorado blue spruce, but it also affects Norway spr...

Author(s) R. C. Williamson, C. F. Koval Skeletonizing of the leaves of roses, raspberries, grapes, fruit trees, and many other cultivated trees an...

Author(s) Laura G. Jull If deer visit your property, you've likely already experienced the frustration of having landscape plants destroyed overni...

Author(s) Dan A. Wilson, Thomas J. Wilson, Wayne G. Tlusty This publication explores landscape planning: putting the plan on paper; selecting, pl...

Author(s) Christine Wen, Joe Van Rossum Making your own compost is an easy, practical, and satisfying way to make use of yard waste and table scr...

Author(s) R. Chris Williamson This fact sheet on the Japanese beetle, considered the single most important turf grass pest in the United States b...

Author(s) Chris Williamson, P.J. Liesch, Jim Kerns, Roger Flashinski Woody Ornamentals Pest Management in Wisconsin is an indispensable resource f...

Author(s) Laura G. Jull This publication focuses on recognizing and preventing plant damage caused by deicing salts, evaluates the pros and cons o...

Author(s) E. R. Hasselkus, E. E. Schulte Explains what fertilizer you should use and how you should apply it to your deciduous trees, evergreens, ...

Author(s) R. C. Williamson, P. J. Pellitteri Tiny aphid-like insects frequently cause unusual swellings called galls at or near the ends of spruce...

Author(s) M. F. Heimann, G. L. Worf, P. J. Pellitteri Sooty mold can be found on virtually any plant in the state. Nearly all shade trees and ever...

Author(s) M. F. Heimann, G. L. Worf "Decline" is a general term that describes the deterioration of a tree's crown or an overall reduction in vigo...

Author(s) E. R. Hasselkus Learn about the importance of planting new trees, shrubs and cultivars. Explore variety selection, and appropriate plac...

Author(s) Laura G. Jull When selecting plants for landscaping, consider choosing ones that offer showy fall foliage. This beautifully illustrated...

Author(s) M. F. Heimann, G. L. Worf Scorch, or the browning of leaf edges, affects a wide range of deciduous and evergreen plants throughout Wisco...

Author(s) G. L. Worf, J. S. Stewart Russian olive (Elaeagnus angustifolia) is a small tree with beautiful, silver-gray foliage. The tree was once ...

Author(s) Stan Binnie Home construction can easily damage or even kill prized and valuable landscape trees. Learn the simple steps of safely prote...

Author(s) M. F. Heimann, R. C. Newman When the herbicides used to kill broadleaf weeds in the lawn are applied on windy or hot days, they may end ...

Author(s) M. F. Heimann, G. R. Stanosz, G. L. Worf These two needle diseases can make Christmas trees unmarketable and can ruin the beauty of Scot...

Author(s) P. J. Pellitteri, D. L. Mahr, D. J. Hall Early season defoliation of pines in southern Wisconsin may be attributed to European pine sawf...

Author(s) M. F. Heimann, G. L. Worf, R. F. Patton Dothistroma needle blight causes needle spots, discoloration, and substantial needle loss in hea...

Author(s) Jane Cummings Carlson, A. Jeff Martin, Kyoko Scanlon Thousands of oaks in woodland and urban settings die every year from oak wilt, a fu...

Author(s) C. F. Koval, M. F. Heimann Oak trees that are dying from the top down or exhibiting drought-like symptoms may be infested with the twoli...

Author(s) M. F. Heimann, G. L. Worf Physical damage to the trunk—caused by sunscald or even lawn mower damage—opens the way for a fungal infection...

Author(s) M.F. Heimann, G.R. Stanosz, G.L. Worf Mountain ash scab is not always a serious problem in Wisconsin, but in wet years it can reach near...

Author(s) M.F. Heimann, G.L. Worf Fire blight sometimes causes dramatic and serious damage, blackening leaves and either the vegetative shoots or ...

Author(s) P. J. Pellitteri, D. L. Mahr The maple petiole borer is an introduced species that has extended its range from the northeastern states t...