Southeastern Wisconsin Invasive Species Consortium, Inc.


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Be on the Lookout for Garlic Mustard Aphids

We are calling all citizen scientists to assist with an effort to spot garlic mustard aphids. Please review the INSTRUCTIONS on how to report your observations. We encourage you to report both positive and negative sightings (a negative sighting occurs when garlic mustard is present, but there are no aphids). Report your sightings to EDDMapS. If you have any questions, please contact Rebecah Troutman at


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Got garlic mustard? Join the competition!

spring news1Our Garlic Mustard Pull-A-Thon is an annual fundraiser. Young people and adults throughout Southeastern Wisconsin work to protect the woodlands of their neighborhoods by forming teams to pull this invasive plant.

Since the Pull-A-Thon began 10 years ago, teams have collectively pulled more than 87 tons of garlic mustard and dame’s rocket! Each year, our goal is to collectively pull 20,000 pounds and raise funds to fight invasive species.

The pull-a-thon is a competition, a fundraiser, and a way for people to join together to have a positive impact on their environment. Our natural areas need your help to avoid the damage that invasives cause!

Each spring Pull-A-Thon Teams are forming throughout Southeastern Wisconsin. A trophy and bragging rights will be awarded to the team that pulls the most garlic mustard/dame’s rocket and pulls in the most donations by June 30.


Help raise funds for environmental education and a sustainable invasives program at the same time that you reduce garlic mustard seed production!

Click here to get started

Why Are We Pulling?

Garlic Mustard (Alliaria petiolata) is an invasive plant that’s taking over our woodlands. It crowds out our native wildflowers and endangers forests by preventing tree seedlings from growing. To make matters worse, none of our native insects or wildlife eat it!

Dame’s Rocket (Hesperis matronalis), another invasive member of the mustard family, can be pulled and bagged along with garlic mustard during the competition, giving each team extra pounds we call a Rocket Boost!

 Order an official  Pull-A-Thon T-shirt and start pulling today!

Invasive Plant Management Workshop

Many people in southeastern Wisconsin work to control exotic invasive plants in our natural areas. SEWISC is teaming with Johnson’s Nursery, Inc.TM to offer our Invasive Plant Management Workshops twice annually. Take this class to ensure that you are using the most appropriate, efficient, up-to-date, and least environmentally damaging methods in your control efforts.

Invasive Plant Class

2022 Fall Workshop

September 10, 2022

9:00 am to 5:00 pm

Havenwoods Environmental Awareness Center

6141 N Hopkins St.

Milwaukee, WI 53209

 Workshop fee: $60.00


This is a hands-on, bring-your-own lunch class. After an introduction to the general ecology of the five functional groups of invasive plants (shrubs, perennial forbs, clonal perennials, grasses, and annuals/biennials), we will discuss, demonstrate, and practice all applicable control methods (chemical and non-chemical) for these five plant types. 

Topics will also include:

  • Identification of our common and relatively new invaders
  • Planning and strategy for an effective control program
  • Use of hand tools and herbicide application methods
  • Herbicide concentrations, mixing, and safety
  • Restoration strategies for badly infested sites
  • Native planting suggestions for continued restoration
  • Record keeping

Registration for the September 10, 2022 class will open at 8 am CST on August 8, 2022

Workshop class size is limited and classes fill fast so mark your calendar!

These workshops are sponsored by

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