Municipalities
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DNR Lands Certification
In 2004, 10 State Forests were endorsed for certification with just over 500,000 acres. In 2009, state parks, wildlife areas, fishery areas and natural areas added an additional 1 million acres of state-owned lands. DNR lands are recognized by both…
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County Forest Certification
Collectively, county forests in Wisconsin represent the largest public landholding in the state. A cooperative management framework between the Wisconsin Department of Natural Resources and the counties provides the opportunity for the county forest…
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Weed Management
The information below is intended to help manage some specific weeds in new tree planting sites and in forest sites. There is also information about general weed management in new tree plantations. Alfalfa Alfalfa grows to about 3 feet in height…
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Red Pine Pocket Decline and Mortality
Red pine pocket decline and mortality is a disease of plantation-grown red pine. The most likely trees to show symptoms of this syndrome are 30- to 45-year-old red pines in thinned plantations. Studies to identify the reasons why certain…
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Oak Wilt
Learn if your property is at risk, how to reduce the spread of oak wilt in a forested area, how to know if a tree has oak wilt and much more.DistributionOak wilt is widespread in southern Wisconsin, but in much of northern Wisconsin it is still a…
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Find Forest Health Help
For sick forest trees, contact a DNR forest health specialist or forester.For sick yard trees, contact a certified arborist or visit the University of Wisconsin-Madison Extension's Ask Your Gardening Question page.
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Spongy Moth
Those currently experiencing a spongy moth infestation are also invited to visit the interagency Wisconsin Spongy Moth Resource Center [exit DNR]. The European spongy moth (Lymantria dispar) was accidentally introduced into Massachusetts in 1869 by…
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Forest Tent Caterpillar
The forest tent caterpillar is an important leaf-eating (defoliating) caterpillar in Wisconsin. Some people call forest tent caterpillars "army worms" because as they travel across the ground they look like marching soldiers. Distribution Forest…
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Emerald Ash Borer
Emerald ash borer (Agrilus planipennis) is an invasive, wood-boring beetle that kills ash trees (Fraxinus spp.) by eating the tissues under the bark. Native to northeastern Asia, emerald ash borer (EAB) was first detected in the United States in…