Bill McNee, Forest Health Specialist, Oshkosh, Bill.Mcnee@wisconsin.gov or 920-360-0942

Ash tree branch in West Allis has been attacked by woodpeckers looking for larvae to eat.
Municipal foresters and property owners with healthy, valuable ash trees should consider treating the trees with insecticide this spring to protect against emerald ash borer (EAB). The pest is currently the most damaging threat to trees in Wisconsin, killing more than 99 percent of the ash trees it infests.
Woodpecker damage during the winter is often the first sign that an ash tree is infested, so it is essential to examine your ash trees. Now is an excellent time to consider insecticide protection because the treatments are usually done between mid-April and mid-May once leaves begin to return. Treatments on already-infested ash trees are more likely to be successful if the trees have low or moderate levels of woodpecker damage.
Continue reading “Treat Your Valuable Ash Trees Against Emerald Ash Borer”
“What kind of tree should I plant?” We are often asked that question as urban foresters. For me, the first thing that comes to mind is, “not a maple!”

Tree City, Tree Campus and Tree Line USA program participants: please review the Arbor Day Foundation’s following expectations regarding the 2021 program recognition standards.
As the year draws to a close, we asked DNR urban forestry staff to reflect on the last twelve months and choose their top highlight – whether it’s a project they’re especially proud of, a new partnership or a deeper relationship with coworkers. Here are their responses:
Fisher, fox, bobcat and bear are just a few of the species captured among the 50 million trail camera photos produced by Snapshot Wisconsin. The Wisconsin DNR program is a wildlife monitoring effort that gets the public involved in science, and the data generated help the DNR make wildlife management decisions. Volunteers host a network of trail cameras across the state that take “snapshots” of animals as they pass by. The program began as a pilot in two counties and launched statewide in 2018. Today the program boasts 1,800 volunteers hosting over 2,100 trail cameras. Information about what is in the photos, combined with where and when they were taken, is already being used to better understand important Wisconsin wildlife species, like white-tailed deer.
Act fast to keep your Tree City, Bird City, and Bee City status! Due dates are as follows: