By forest health specialists Paul Cigan, Hayward, email@example.com, 715-416-4920 and Linda Williams, Woodruff, firstname.lastname@example.org, 920-360-0665
Oak wilt has been found for the first time in Forest County and several new northern townships in 2019. These previously undocumented infections were detected using a combination of ground surveys, forester and landowner reports and aerial survey flights. This deadly fungal disease of red oaks has now been confirmed in 65 of Wisconsin’s 72 counties.
Oak wilt detection map as of January 1, 2020.
Continue reading “Oak wilt found in Forest Co. and northern townships”
By Paul Cigan, forest health specialist, Hayward, email@example.com, 715-416-4920
With the new year upon us, healthy lifestyle habits are sure to be on many people’s minds as they plan for changes in diet and exercise. The new year is also the perfect opportunity to make healthier choices for trees! Winter is the ideal time for tree pruning while avoiding harmful, disease-carrying pests such as the tiny beetles that carry oak wilt from one tree wound to another.
Pruning during winter is less likely to invite unwanted, disease-carrying pests like the beetles that carry oak wilt from one tree to another. Credit: sasapanchenko.
Continue reading “Protect your trees from disease by pruning when they have no leaves”
Forest health annual report now available for 2019.
The Forest Health Annual Report summarizes notable impacts for that year of pests, diseases and weather on the health of Wisconsin’s forests. The report is a collaborative product created by DNR forest health specialists from around the state. It outlines the damage and spread of both native and invasive pests and diseases during that year and puts these into context of observations from previous years. Management programs and their results are also described. Highlights from the 2019 annual report include:
- Dramatically increased decline and mortality from emerald ash borer in southern WI
- New county and township detections of oak wilt
- Precipitation record and major storm damage
- Summary of state nursery studies on Diplodia sapinea, galls on jack pine seedlings, and testing new fumigants to replace methyl bromide
This year’s annual report is available on the DNR forest health homepage. Previous annual reports, including historical reports dating back to 1951, are archived and available upon request. Contact your local forest health specialist if you’d like digital copies of any archived annual reports.
Forest health staff recently produced a map that highlights a gradient of damage from southeastern to northwestern Wisconsin, which roughly corresponds to the length of time EAB has been present in these parts of the state. Whatever the level of damage, homeowners and landowners should consider treating healthy ash, including trees that have responded well to previous treatments, or removing declining, untreated ash before they become hazardous and even more costly to remove.
County-level assessment of damage to ash population by emerald ash borer, 2019.
Continue reading “New map illustrates damage from EAB”
Most people are familiar with the impacts of invasive plants to natural areas, but did you know that invasive plants can be hazardous to human health? Did you also know there is a new app available to learn about tick activity near you and help researchers by recording your own tick encounters? Continue reading “Invasive plants, ticks and you”
By Bill McNee, forest health specialist, Bill.McNee@wisconsin.gov, 920-360-0942 and Andrea Diss-Torrance, invasive forest insects program coordinator, Andrea.DissTorrance@wisconsin.gov, 608-264-9247
Hunters should avoid placing tree stands in or near ash trees, especially in the southern half of Wisconsin, the Mississippi River region and in Door County. Many ash trees in these areas are dead or dying from attack by emerald ash borer (EAB), becoming weaker and more likely to break even with little to no added weight. Continue reading “Dead and dying ash are hunting hazard”
By Mary Bartkowiak, invasive plants specialist, Rhinelander, Mary.Bartkowiak@wisconsin.gov, 715-493-0920
There’s so much to enjoy about fall and so many activities to take in before the blanket of snow changes our landscape. Something to keep in mind is that the introduction of invasive plants can play a role in changing the landscape, too.
Continue reading “Slow the spread by sole and tread – revisited!”
By Bill McNee, DNR forest health specialist, Oshkosh, Bill.McNee@wisconsin.gov, 920-360-0942
Fall is an excellent time to look for and dispose of gypsy moth egg masses that were laid in the summer. Since egg masses usually don’t hatch until April, information gained from fall/winter surveys can be used to avoid gypsy moth damage before the following spring and summer.
Spraying egg masses with oil kills the eggs inside, preventing hundreds of caterpillars from hatching next spring.
Continue reading “Look for gypsy moth egg masses”
By Kyoko Scanlon, forest pathologist, Fitchburg, Kyoko.Scanlon@wisconsin.gov, 608-275-3275
The Wisconsin Pesticide Applicator Training (PAT) program with University of Wisconsin Extension is offering a training session for Forestry (Category 2.0) in January 2020. The training is a one-day indoor session to review the materials in the training manual. A certification exam will be administered at the end of the day by Wisconsin Department of Agriculture, Trade and Consumer Protection.
This training will be held January 24, 2020 in Stevens Point at the Portage County Courthouse Annex Building (1462 Strongs Avenue).
Pre-registration is required and the fee is $30. For more information, visit the PAT website. When you are ready to register, visit the PAT program online ordering page.
By Mike Hillstrom, forest health specialist, Fitchburg, Michael.Hillstrom@wisconsin.gov, 608-513-7690
Considered one of the most destructive diseases of conifers in the northern hemisphere, HRD is very difficult to eradicate once established. Infestation of a conifer stand may significantly impact stand management, making early detection of the disease extremely important.
HRD fruit body with new white growth on infested stump. Credit: DNR Forest Health.
Continue reading “Fall is a great time to look for HRD”