Diseases- Weeds- Insects & Other Problems-C95

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

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) 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) M. F. Heimann, G. L. Worf, J. E. Kuntz, M. J. Drilias Research has demonstrated that many of Wisconsin sugar maples are declining becaus...

Author(s) K. A. Delahaut, G. L. Worf, E. R. Hasselkus In Wisconsin, scab is the most common ornamental-crabapple disease and is also the most impo...

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

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) 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) G. L. Worf, M. F. Heimann The honeylocust has become an increasingly important street and landscape tree in Wisconsin. Finer textured an...

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) 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. L. Worf Springtime weather injury can cause misleading symptoms on foliage. This fact sheet describes symptoms and ste...

Author(s) G. L. Worf., J. E. Kuntz Many problems and disorders can lead to tree decline. This fact sheet explores sun scald, girdling roots, mower...

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) 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) 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) 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...

Author(s) P. J. Pellitteri, C. F. Koval, D. L. Mahr Maple leaves frequently develop growths or swellings known as galls. These are caused by micro...

Author(s) C. F. Koval, D. L. Mahr, P. J. Pellitteri Cottony maple scale is an insect that can infest the twigs of maples and other shade trees wit...