Pink-Striped Oakworm Population Remains Low

Posted on by akabelowsky
Photo of a pink-striked oakworm caterpillar on a hand.

This large caterpillar, a pink-striped oakworm, has great camouflage and blends in with oak twigs very well. / Photo Credit: Linda Williams, Wisconsin DNR

By Linda Williams, DNR Forest Health Specialist, Woodruff;
Linda.Williams@wisconsin.gov or 920-360-0665

Pink-striped oakworm is a native fall defoliator. Fall defoliators affect the health of trees less than defoliators that occur in the spring.

Although literature states that high populations of this caterpillar can create significant defoliation, no defoliation was noted in the area this caterpillar was observed in Oneida County.

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Not-So-Notorious Native Buckthorn

Posted on by akabelowsky
Photo of alder-leaved buckthorn, a native species in Wisconsin.

The native alder-leaved buckthorn is much smaller than its invasive counterparts and prefers wet areas such as fens. / Photo Credit: Wisconsin DNR

By Mary Bartkowiak, DNR Invasive Plant Program Coordinator, Rhinelander Service Center;
Mary.Bartkowiak@wisconsin.gov or 715-493-0920
and Erika Segerson-Mueller, DNR Invasive Plant Program Specialist, Oshkosh Service Center;
Erika.Segersonmueller@wisconsin.gov or 715-492-0391

Most of the rather frequent buzz about buckthorn revolves around the two non-native, invasive types: common and glossy. The Wisconsin Department of Natural Resources (DNR) reminds the public that while these aggressive plants and serial invaders are common in Wisconsin forests, there is also a benign and native buckthorn that gets much less attention.

Many people are surprised to learn about this small shrub that has eluded notoriety, unlike its close relatives. Native buckthorn, also known as alder-leaved buckthorn (Rhamnus alnifolia), is a demure shrub that doesn’t grow much taller than 3 feet and prefers wet areas with calcium in the soil.

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Time To Seek Out Spongy Moth Egg Masses

Posted on by akabelowsky

By Bill McNee, DNR Forest Health Specialist, Oshkosh;
bill.mcnee@wisconsin.gov or 920-360-0942

Photo of spongy moth egg masses on a tree.

Three spongy moth egg masses are found on a tree branch at Kettle Moraine State Forest Southern Unit in Walworth County. / Photo Credit: Bill McNee, Wisconsin DNR

The Wisconsin Department of Natural Resources (DNR) is encouraging property owners to seek out and dispose of spongy moth egg masses, which were produced by adult moths during the summer.

Each spongy moth egg mass contains hundreds of eggs that will hatch into hungry, leaf-eating caterpillars in the coming spring. Large numbers of these invasive caterpillars can be a tremendous nuisance that may cause tree mortality.

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Beware Of Bittersweet In Fall Decor

Posted on by akabelowsky
Photo of round leaf bittersweet berries

The berries of round leaf bittersweet (Celastrus orbiculatus) grow in clusters at each leaf axil. The highly invasive nature of this plant makes it unsuitable for use in fall decorations. / Photo Credit: Chris Evans, University of Illinois, Bugwood.org

By Erika Segerson-Mueller, Invasive Plant Program Specialist, Oshkosh Service Center;
Erika.Segersonmueller@wisconsin.gov or 715-492-0391

When temperatures begin to cool and back-to-school sales emerge, our thoughts turn to pumpkin spice, sweater weather and all things fall décor.

But as you gear up for spooky season this year, the Wisconsin Department of Natural Resources (DNR) reminds you to beware of using invasive plants in your decorations.

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Aphids Make Sticky Situation For Oak, Beech Trees

Posted on by akabelowsky

 

Photo of Myzocallis oak aphids on a leaf, with an adult at the left.

Myzocallis aphids feed on the top side of oak leaves. An adult is pictured on the left. / Photo Credit: Linda Williams, Wisconsin DNR

By Linda Williams, DNR Forest Health Specialist, Woodruff; Linda.Williams@wisconsin.gov or 920-360-0665

and Bill McNee, DNR Forest Health Specialist, Oshkosh; bill.mcnee@wisconsin.gov or 920-360-0942

Aphids — and the honeydew they produce — have made their mark on trees in Wisconsin during 2023.

Midway through the summer, oak trees in areas of Vilas and Oneida counties were buzzing with activity. During September, beech trees in eastern Wisconsin became busy with a different species of aphid.

A look at the two situations:

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One Million Trees Now In Wisconsin Community Tree Map

Posted on by patricialindquist

By Dan Buckler, DNR Urban Forest Assessment Specialist, Milwaukee, Daniel.Buckler@wisconsin.gov or 608-445-4578 

Ever since it launched in 2017, the Wisconsin Community Tree Map has been building a collective inventory of urban trees across the state. Now a milestone has been passed: over one million trees are in the database, giving users an expansive look at much of our urban forest.

Visitors to the tree map, a compilation of tree inventories from over 200 organizations, can use the tool to learn more about their local trees, such as species composition, size distribution, or even some of the ecosystem services those trees provide. Users can filter by certain attributes or areas to further identify trees of interest. Overall, it can be a powerful management, scientific, marketing and educational tool.

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Young Tree Training Pruning Workshops

Posted on by patricialindquist

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. 

Set your trees up to thrive and help alleviate storm damage by properly pruning your trees when they’re young. It’s an excellent investment of resources providing exponential savings in the future.

Please register ASAP as these start in just a couple weeks.

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Request For Urban Forestry Council Award Nominations

Posted on by patricialindquist

The 2023 Urban Forestry Council Award winners. From left to right: John Wayne Farber, Leadership Award; John Gall, Lifetime Achievement Award; Cory Gritzmacher, receiving the Innovation Award on behalf of the Mequon Nature Preserve.

The Wisconsin Urban Forestry Council, comprised of municipal employees, elected officials, nursery operators, and arborists, advises the Wisconsin Department of Natural Resources (DNR)’s Division of Forestry on the best ways to manage urban and community forest resources.

Every year, the council bestows several awards to recognize and thank individuals, organizations, communities and tribes across Wisconsin for their work and commitment to the trees, plantings, habitat and economic benefits they provide. The awards are announced at the annual Wisconsin Urban Forestry Conference in February and presented to winners in their community.

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Reminder: 2023 DNR Urban Forestry Grant Applications Open

Posted on by patricialindquist

Cities, villages, towns, counties, tribes and 501(c)(3) nonprofit organizations in or conducting their project in Wisconsin are encouraged to apply for a regular or startup 2023 Wisconsin Department of Natural Resources (DNR) Urban Forestry Grant.

The grants range from $1,000 to $25,000, and grant recipients must match each grant dollar for dollar. A startup grant of up to $5,000 is available for communities that want to start or restart a community forestry program. Grants are awarded to projects that align with state and national goals for increasing the urban forest canopy and the benefits it provides.

The recent Governor’s 2023-25 Biennial Budget increased funding to urban forestry grants by $350,000 over the biennium. In 2024, the annual allotment will increase by $175,000 to further fund Urban Forestry projects. Also available this grant cycle is an additional $145,000 in federal funding to be used for emerald ash borer treatment and ash tree removals and replacements. In total, $806,680 is currently available in regular and startup grant funding for 2024, with an additional $139,920 in reserve for catastrophic storm grants.

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DNR Releases Statewide Drought Resource Webpage

Posted on by patricialindquist

The Wisconsin Department of Natural Resources (DNR) recently launched a Drought Resource webpage as a new public source for information related to the drought conditions experienced by most of the state this year. 

The new webpage gives viewers access to current drought conditions across Wisconsin, helpful resources from various DNR programs and other state and national resources regarding drought conditions. Visitors to the webpage can also find tips for conserving water and information about accessing water during a drought based on their specific water use needs.

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