
A finger points to a tan-colored spongy moth egg mass on a tree. / Photo Credit: Bill McNee, Wisconsin DNR
By Bill McNee, DNR Forest Health Specialist, Oshkosh;
Bill.McNee@wisconsin.gov or 920-360-0942
If the 2024 spring and summer weather conditions are favorable for the spongy moth (Lymantria dispar) population, the current outbreak will continue and spread to other parts of Wisconsin. Property owners are encouraged to examine susceptible host trees (including oak, birch, crabapple, aspen and willow) and make plans to manage them.
In summer 2023, Wisconsin saw a record amount of defoliation. State agencies received many calls from property owners urgently seeking a tree care business to control a large caterpillar infestation.
Continue reading “Make Your 2024 Spongy Moth Treatment Plans Early”


Autumn is a great time to plant trees. After the trees go in the ground, please take a few minutes to document the effort in the
The application portal for Tree City USA is
The city of Mauston (Juneau County, Wisconsin) is a small rural city of just under 4,500 people, situated along the I-90/94 corridor in central Wisconsin. Despite having a highly successful local manufacturing economy, a regional medical center and being situated in heavily trafficked regional tourist destination area, Mauston and Juneau County both have lower than average incomes and high levels of poverty. The region is one of Wisconsin’s rural food deserts, and the local food pantry, the Community Sharing Pantry, plays a crucial role in fighting local hunger.

The Wisconsin Department of Natural Resources (DNR) and UW-Madison Extension have teamed up to offer young tree training pruning workshops at five locations around the state. Wachtel Tree Science will be presenting the information in a morning-indoors-afternoon-outside format. The cost is $35 including lunch, and ISA Continuing Education Units (CEUs) will be offered.