Pitch blobs near the base of a red pine indicate attack by red turpentine beetle. / Photo Credit: Linda Williams, Wisconsin DNR
By Linda Williams, Wisconsin DNR Forest Health Specialist
Linda.Williams@wisconsin.gov or 920-360-0665
Red turpentine beetle and pine root collar weevil are the most common insects found attacking near the base of red pine trees in Wisconsin, whether near ground level or just below ground level.
Here are some tips on identifying and controlling these pests.
Forest tent caterpillar larvae displaying gregarious behavior and feeding on a tree leaf. / Photo Credit: Paul Cigan, Wisconsin DNR
By Paul Cigan, Wisconsin DNR Forest Health Specialist
Paul.Cigan@wisconsin.gov or 715-416-4920
Forest tent caterpillar (FTC) populations do not appear to be making a significant return this growing season.
Spring egg mass surveys indicate that populations continue to remain low, continuing the longest documented interphase between outbreaks on state record, at 22 years and counting. The interphase provides some relief for the health of aspen stands recovering from several consecutive years of recent spongy moth defoliation.
Continue reading “Forest Tent Caterpillar Outlook Stays Low”
Hemlock needles affected by winter desiccation will start browning at the needle tips and move inward, sometimes killing the entire needle. / Photo Credit: Linda Williams, Wisconsin DNR
By Linda Williams, DNR Forest Health Specialist
Linda.Williams@wisconsin.gov or 920-360-0665
During the winter months, warm or sunny weather can wreak havoc on evergreen trees.
Conifers such as hemlock, pines and fir can lose moisture from their needles during the winter. If too much moisture is lost, those needles can quickly turn yellow or brown once the weather warms up in the spring.
Extensive browning of needles on hemlock — sometimes more than 50 percent of the needles – was observed in scattered areas of Oneida and Bayfield counties by the second week of April. The brown needles eventually dropped from the trees, leaving the remaining foliage looking very thin. Buds on the trees appeared viable, and the trees should break bud as normal.
Continue reading “Red Pine And Hemlock Needles Suddenly Looking Brown”
The logo for the Silvicast, a podcast hosted by Wisconsin DNR silviculturists Greg Edge and Brad Hutnik and produced by the University of Wisconsin-Stevens Point’s Wisconsin Forestry Center. / Graphic Credit: UW-Stevens Point
By Art Kabelowsky, Wisconsin DNR Outreach and Communications
Arthur.Kabelowsky@wisconsin.gov or 608-335-0167
They talked about pulling it, smothering it, using herbicide on it, making turkey calls and making curtain rods from it.
They even wondered if they should just “kill it with fire.”
But it seems Midwestern foresters’ never-ending battle against buckthorn requires a brainier approach.
Michael Hillstrom, invasive forest pest coordinator for the Wisconsin Department of Natural Resources Forest Health team. / Photo Credit: Wisconsin DNR
By Wisconsin DNR
Michael Hillstrom, Invasive Forest Pest Coordinator for the Wisconsin Department of Natural Resources (DNR), will present a public talk on invasive species and forest health on Sunday, June 22.
Hillstrom’s talk will be part of a two-hour presentation, running from 10 a.m. to noon at Lake Kegonsa State Park, 2405 Door Creek Rd., Stoughton. It is open to the public.
The event is one of several statewide gatherings organized by the DNR as part of Invasive Species Awareness Weekend.
By Jay Dampier, DNR IRA Grant Coordinator
Jason.Dampier@wisconsin.gov or 920-765-1935
Arbor Day story time
This April and early May, communities across Wisconsin came together to celebrate Arbor Day. The DNR supported over 40 in-person events statewide. From Marshfield to Menasha and from New Richmond to New Glarus, staff fanned out across the state engaging communities in Arbor Day celebrations. Continue reading “Arbor Day 2025: Growing Together Across Wisconsin”
Have you ever walked through a patch of poison ivy or brushed up against wild parsnip? If so, you probably learned an uncomfortable lesson about encountering harmful plants. Luckily, there is a less painful way to learn about dangerous vegetation hidden among Wisconsin’s natural beauty. Now is the time to brush up on hazards you may encounter while working or recreating outdoors.
Outdoor Hazards in Wisconsin, a guide published by the University of Wisconsin-Madison Division of Extension, will help you recognize, avoid and handle potential problems caused by wildlife, insects and plants. Continue reading “Watch Out!”
Are you an arborist or urban forester who conducts tree risk assessments?
Researchers from the Universities of Toronto, Florida and Wisconsin-Stevens Point are researching how arborists perceive the likelihood of failure of included bark. They’ve put together a survey with scenarios and photos and are looking for tree care professionals to rate the likelihood of failure. As an incentive, there will be a drawing for one of ten $100 gift cards to an arborist supply store. Continue reading “Survey: Likelihood Of Included Bark Failure”
Public, Private Forestry Experts Encouraged To Apply For Membership In State Advisory Committee
Are you a forestry expert interested in working with the Wisconsin Department of Natural Resources (DNR), forest industry professionals and natural resource leaders to ensure sustainable management practices of Wisconsin’s forest resources?
The DNR and Wisconsin Council on Forestry are seeking representatives from a variety of partner interest groups to fill several current and upcoming vacancies on the Silviculture Guidance Team (SGT), which provides crucial oversight and input to ensure the responsible and effective management of Wisconsin’s forest resources. Continue reading “Lend Your Expertise To The Silviculture Guidance Team”
Partners in Community Forestry Conference: Nov. 19-20, 2025
This gathering unites passionate individuals, communities, organizations and leaders to explore innovative solutions, share insights and collaborate on the future of urban forestry. Join leaders across the industry to focus on strengthening the bonds between people and trees, fostering sustainable practices and creating green, thriving urban landscapes.
Keep an eye on the website or sign up for emails for more information.
WAA Summer Conference: July 31, 2025
Location: Marian University, Fond du Lac, WI
Watch the WAA website for more information and registration. Continue reading “Save The Date: Upcoming Conferences”
