Hollow pitch blisters get darker with age and may resemble cones until closer examination. / Photo Credit: Wisconsin DNR
By Linda Williams, DNR Forest Health specialist, Woodruff
Linda.Williams@wisconsin.gov or 920-360-0665
Northern pitch twig moth (Petrova alhicapitana) is also called the pitch nodule maker or pitch blister moth.
It feeds on branches and twigs of young jack pine and scotch pine, causing a hollow blister of gooey pitch to form around the larvae as it feeds at the base of a lateral branch. It prefers trees that are 20 feet tall or smaller, although it can attack older trees.
Continue reading “Northern Pitch Twig Moth Creates Pitch Blisters On Jack Pine”
The Wisconsin Department of Natural Resources (DNR) is hosting a webinar to help you develop a competitive urban forestry grant application. This webinar will guide you through the application form so you can submit a strong application that aligns with the DNR’s Urban Forestry Program funding priorities.
The annual WAA/DNR Urban Forestry Conference will again be held at the KI Convention Center in Green Bay, Wisconsin. More information will be available soon! 
Tree managers met at 
The Urban and Community Forestry Society (UCFS) Industry Trends committee – charged with monitoring the issues impacting your work – is seeking information on your experiences with insurance companies and urban tree canopy. There is growing evidence that insurance companies are directing the pruning or removal of trees, and the committee wants to fully understand the issue. Your responses to the survey below will help compile stories and evidence so that UCFS can work with industry partners and draft position statements. 
The DNR’s Reforestation Program needs red and white pine cones – more specifically, we need the seeds found within those cones for our reforestation needs. The Reforestation Program produces millions of pine seedlings every year at the Wilson State Nursery in Boscobel, and the only way we can produce those seedlings is with seed collected from the fields and forests of Wisconsin. 
The 
The Wisconsin Department of Natural Resources (DNR) today announced it is now accepting applications for 
*These training opportunities are provided as an information service only and do not constitute an endorsement from the Wisconsin Department of Natural Resources (DNR).