UW-Madison Launches Website About Cicadas

By Krista Hamilton, Wisconsin Department of Agriculture, Trade and Consumer Protection;
Krista.Hamilton@wisconsin.gov

Photo of cicadas on a plant.

Hungry cicadas are expected to emerge from their 17-year dormancy this month to feed and mate. In past emergences, Brood XIII cicadas have been documented in 11 southern Wisconsin counties. / Photo Credit: Jim Occi, BugPics, Bugwood.org

In anticipation of the emergence of the Brood XIII periodical cicada this spring, the University of Wisconsin-Madison introduced a new Wisconsin Periodical Cicada website.

Information on the site covers the biology, ecology and distribution of these insects using photos, historical videos and other useful resources.

UW-Madison entomologist PJ Liesch sifted through 150 years of books, newspaper articles, university studies, government records and specimens in the Wisconsin Insect Research Collection to develop an updated map of Wisconsin periodical cicada reports.

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The Scourge Of Spurge, Both Cypress And Leafy

By Erika Segerson-Mueller, DNR invasive plant program specialist, Oshkosh;
Erika.SegersonMueller@wisconsin.gov or 715-492-0391

Photo showing the white milky sap of spurge plants, sometimes called “wolf’s milk.”

The white milky sap of spurge plants, sometimes called “wolf’s milk,” can be toxic to cattle and irritating to human skin. / Photo Credit: Norman E. Rees, USDA Agricultural Research Service Retired, Bugwood.org

Managing invasive plant species can really be a pain. When the plants you are targeting can potentially harm human health, that pain can become quite literal.

Leafy spurge (Euphorbia esula) and Cypress spurge (Euphorbia cyparissias) are restricted invasive plants under Wisconsin’s Invasive Species Rule NR40. Aside from their tendency to spread aggressively and displace native species, both plants contain a white milky sap that can cause skin irritation in some humans and is potentially toxic to cattle and horses. Continue reading “The Scourge Of Spurge, Both Cypress And Leafy”

Phomopsis Galls Found On Northern Red Oak

By Linda Williams, DNR forest health specialist, Woodruff;
Linda.Williams@wisconsin.gov or 920-360-0665

Photo showing large Phomopsis galls on a tree before it has leafed out in the spring.

It is often easier to spot large Phomopsis galls before leaves come out in the spring.

Phomopsis galls are large woody swellings on the branches or main stem caused by a fungus. Across Wisconsin, Phomopsis galls can grow on hickory, especially bitternut hickory. However, in some areas of Wisconsin, they can occur on northern red oak.

Northern red oaks sometimes have hundreds of Phomopsis galls on the branches, ranging from as small as a tennis ball to as large as a basketball. Continue reading “Phomopsis Galls Found On Northern Red Oak”

Upcoming Changes To Three Urban Forestry Regions

The boundaries of the Northeast, East Central and North Central DNR Urban Forestry regions will be altered at the end of April to balance workload across the regions better. The changes are:

  • Winnebago, Fond du Lac and Green Lake counties are moving from the Northeast to the East Central region.
  • Waushara and Marquette counties are moving from the Northeast to the North Central region.
  • Forest and Florence counties are moving from the North Central to the Northeast region.

The map included below reflects these changes and will be available on the Urban Forestry Contacts webpage after the changes take effect.

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Make The Most Of Arbor Day On April 26!

The first Arbor Day celebration was held in Nebraska in 1872. More than 150 years later, Arbor Day is celebrated in all 50 states and in many countries around the world. This year, Arbor Day will be observed in Wisconsin on Friday, April 26. Below are ways you can celebrate, educate and care for trees in your community.

 

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Celebrate Arbor Day Using Social Media (See Our Suggested Posts Below)

For the last few years, our urban forestry team has been writing social media posts for Wisconsin communities to post during Arbor Week. We encourage you to use social media to celebrate the many benefits of trees and inform the public about the importance of tree care.

Feel free to use the suggested messages provided below or develop your own create tree campaign.

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A Taste Of Tree City USA In Wisconsin

Started in 1976, Tree City USA is one of the Arbor Day Foundation’s oldest programs. The founders had a vision for a greener, healthier America and hoped this initiative would inspire change on a nationwide level. The first Tree City USA cohort was comprised of 42 communities in 16 states. Today, the program includes more than 3,600 communities from all 50 states, Washington D.C. and Puerto Rico.

Publicly demonstrating commitment to the environment is a great way to build pride among residents, as well as position your community as an attractive place to live. The Tree City USA program provides communities with a four-step framework to maintain and grow their tree cover. It also gives them an avenue to celebrate their work, showing residents, visitors and the entire country that they’re committed to the mission of environmental change.

Here are just a few examples of the 193 Tree Cities in Wisconsin.

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Urgent Climate Survey Responses Needed

The Wisconsin Climate and Health Collaborative, a group of climate and health professionals from across the state working to create a healthier climate, people and communities through local action, wants to learn from you and your community! Take this short climate and health survey for a chance to win a Wisconsin state park pass. Responses are due April 15.

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Urban Forestry Today’s Summer Tree Summit

Tree Canopy, Environmental Justice & Urban Forestry: Understanding The Relationship
With Dr. Dexter Locke, USDA Forest Service

The University of Massachusetts Amherst is bringing back its Urban Forestry Today’s Summer Tree Summit, kicking it off with a discussion of how to define environmental justice in the context of urban tree canopy cover and urban forest management. Join Dexter Locke from the USDA Forest Service as he explains these important terms and concepts and their practical ramifications for urban foresters and residents.

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On The Outs With Goutweed

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

Photo of Bishop’s goutweed, a common garden ornamental that may be better known to home gardeners as “snow-on-the-mountain.”

A common garden ornamental, Bishop’s goutweed may be better known to home gardeners as “snow-on-the-mountain.” / Photo Credit: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

Introduced as an ornamental plant commonly planted in gardens, Bishop’s goutweed is a restricted invasive plant in Wisconsin under Invasive Species Rule NR40.

Also known by common names such as snow-on-the-mountain, bishop’s weed and goutwort, the variegated variety with white edges will probably look familiar to many gardening enthusiasts. Continue reading “On The Outs With Goutweed”