Invasive plant virtual workshop

Chris Evans, University of Illinois, Bugwood.org

The Village of Gays Mills is teaming up with the Wisconsin First Detector Network (WIFDN) and Extension to host a virtual workshop on invasive plants. Titled “Invasive Plants: Know Them, Control Them,” the workshop will take place on zoom on September 30th from 9 am-10:30 am.

The workshop will provide you with the basic information needed to recognize and manage invasive plants common – or coming – to western Wisconsin. Presenters include Anne Pearce, WIFDN Coordinator, and Dr. Mark Renz, Professor and Extension Weed Specialist, UW-Madison. Here is the agenda:

  • 9:00 am – Impacts of invasive plants to landowners and communities
  • 9:15 am – Identification of priority and early detection invasive plants in southwestern Wisconsin
  • 9:45 am – Invasive plant management planning, tools, and techniques
  • 10:15 am – Questions and answers

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Urban forestry standard survey

The Sustainable Forestry Initiative (SFI) is seeking input from the urban-forestry community to understand the value and challenges facing urban forests, and gauge interest in the development of an urban forestry standard. To assist with this, please complete this 13-questions survey which will take no more than 15 minutes of your time.

https://www.surveymonkey.com/r/SFISurveyUrbanForestry

To learn more about this initiative, you can view a webinar SFI conducted on June 9th to explore this opportunity.

Please respond to this survey by August 28, 2020. For queries about the survey, please email Jason.Metnick@SFIprogram.org.

Urban forests support mental health

As the hilarious, award-winning Nature RX video series points out, spending time in nature is a potent “drug” for alleviating the day-to-day stress we all face. It is also a powerful way to combat anxiety, depression, and mental illnesses such as schizophrenia. The average American is sorely in need of the stress-relieving boost provided by trees. Eighty percent of American adults are afflicted by stress; forty million are affected by anxiety disorders, and nearly sixteen million experience major depression each year.

In recent years, the medical community has been increasingly recognizing the importance of trees to mental health. A growing number of scientists have been studying and documenting the health benefits of trees. For example, one study found that a 25% increase in neighborhood tree canopy was associated with a 1-point decrease on a 5-point scale for depression, anxiety and stress. Another study analyzed MRI scans of the brains of urban residents who live close to a forest. These residents were found to have an amygdala structure that is associated with a greater ability to cope with stress. (Source)

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Trees for clean air

By Robert Allard, Urban and Community Forestry Coordinator, Rhode Island DEM

This year, as families all over the country spend more time at home, we have been given the opportunity to appreciate the fresh air that we can enjoy on our own back porches and front stoops more than ever.  Trees are a significant factor contributing to the quality of the air we breathe. Recent research shows that even relatively small trees bring benefits to their neighborhoods. Just a single tree has the potential to filter up to one third of fine particulates such as dust, dirt, soot, and smoke within 300 yards, and can reduce particulate matter inside homes by as much as 60%.

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Feature species: swamp white oak

Paul Wray, Iowa State University, Bugwood.org

Scientific name: Quercus bicolor

Native to: northeastern quarter of the U.S. (including southern Wisconsin)

Mature Height*: 50-60+’

Spread*: 50-60’

Form: broad, wide-spreading

Growth Rate*: slow to moderate; 12”-18” per year

Foliage: 5”-6”; glossy green above, white below; leathery with shallow, irregular lobes; leaves often persist into winter

Fall Color: yellow-brown to orange-brown

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Wondering about large yellow wasps?

If you’ve noticed large yellow wasps flying around this summer, you may be wondering whether you’ve seen the Asian giant hornet (aka “murder hornet”). This probably gave you some pause considering all the headlines they received earlier this year,  but fortunately for Wisconsin and much of the Midwest, murder hornets have not yet been found in the region.

Close-up photo of cicada killer.

The cicada killer is a common native insect in the Midwest.

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Be on the lookout for beech leaf disease

By Elly Voigt, forest health lab assistant, Fitchburg

Beech leaf disease (BLD) is a relatively recently discovered, destructive disease of beech trees in the US. It was first observed in 2012 in Ohio and has since spread to areas of Pennsylvania, New York, Connecticut, Rhode Island, Massachusetts and Ontario, Canada. BLD affects our native beech species, American beech (Fagus grandifolia) and ornamental beech species, including European beech (Fagus sylvatica). The disease has not yet been observed in Wisconsin but could become an issue in the future.

Overhead view of beech leaves show puckering of leaf segments.

Symptomatic leaf puckering of a beech tree with BLD. Credit: Ohio State University.

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Revised aerial spray guide now available

By Bill McNee, forest health specialist, Oshkosh, Bill.Mcnee@wisconsin.gov, 920-360-0942

Increasing reports of gypsy moth, forest tent caterpillar and other defoliators this summer may indicate rising populations and increased defoliation over the next few years. A recently revised guide to aerial sprays for landowners is now available.Cover page of the updated aerial spray guide. Continue reading “Revised aerial spray guide now available”

Interactive HRD stump treatment guidelines available online

The HRD stump treatment guidelines are now available in an interactive format to make it easier to obtain stand-specific recommendations. You can find the link called “Interactive guidelines” on the right side bar under “Additional Resources” at the DNR HRD webpage. The user will be asked a series of questions and then a stand-specific recommendation will be provided at the end. The interactive guidelines incorporate Exceptions and Modifications described in the guidelines. Check it out!        

Fall webworm activity in July

By Todd Lanigan, forest health specialist, Eau Claire, Todd.Lanigan@wisconsin.gov, 715-210-0150

Fall webworm started showing up in early July. This native insect feeds on deciduous trees and shrubs and appears every year in yards and forests. It is often noticed first by the loose webbing over branch tips. It can even completely cover a small tree with webbing. If you look inside the webbing, you will find partially eaten leaves, frass (caterpillar poop) and both live and dead caterpillars.

Fall webworm caterpillars atop

Fall webworm larvae feed within webbed enclosures at branch tips. Credit: Courtney Celley, US Fish & Wildlife Service.

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