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Webinar: Jumping Worm Update - A Nursery & Landscaping Industry Perspective
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Webinar: Jumping Worm Update - A Nursery & Landscaping Industry Perspective

Join us for a 1-hour webinar: Jumping Worm Update - A Nursery & Landscaping Industry Perspective

 Export to Your Calendar 3/20/2018
When: Tuesday, March 20, 2018
12:00 PM
Where: United States
Contact: Susan Flynn

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MNLA webinars provide timely educational topics from the comfort of your home or office. Join us for one or all of the lunch-time webinars this spring!

Cost:  Unless otherwise noted, webinars are free for MNLA members; $29 for non-members.

Presenter:  Jim Calkins is a horticulturalist, researcher, and educator with extensive experience in plant identification, distribution, production, culture and use, and has been an active member of the Minnesota Nursery & Landscape Association for nearly 18 years. Calkins has taught a variety of classes at the University of Minnesota and has also spoken extensively to community and professional organizations.



Jumping or crazy snake worms (Amynthas spp. and others) are non-native, invasive earthworms from southeastern Asia, specifically Japan and the Korean peninsula, that have unfortunately found their way to North America. Present in the southern Appalachian region of the United States for many years, these invaders have more recently been found in several northeastern states and most recently in the Upper Midwest in Minnesota and Wisconsin and in the Pacific Northwest in Oregon. In Minnesota they have been found in several locations in Minneapolis and on the University of Minnesota, St. Paul campus, but little is otherwise known about their distribution in the state. 


Sometimes described as “ecosystem engineers” in response to their dramatic effects on soil structure and chemistry, these worms are surface-dwellers that aggressively feed on leaf litter and organic matter near the soil surface and research indicates they can be very destructive and pose a serious threat to native ecosystems and designed landscapes in non-native habitats like Minnesota. 


Sadly, the green industry – through the movement of landscape plants, mulch, and compost – is believed to be primary vector involved in the spread of these harmful worms and their introduction to new areas.  As a result, the possibility of regulating jumping worms in Minnesota is being investigated and it is important that nursery and landscape professionals be aware of these destructive worms and take steps to prevent their spread and introduction to new areas.

  • Jim Calkins, Research Information Director (MNLA Foundation) and Regulatory Affairs Manager (MNLA) will provide an update on the status of jumping worms in Minnesota and their potential impact on the Minnesota nursery and landscape industry and its customers.
  • Learn more about jumping worms – their life cycle and identifying characteristics, how they are spread to new areas, the implications of potential regulation, how to report suspected jumping worm infestations, and what can be done to prevent the spread of these destructive pests. 


  • The webinar begins at 12:00 p.m., and is 50 minutes with 10 minutes for discussion and questions.


Please note that credit (if available) is only provided to registered attendees participating at their own computer and phone. 

  • MNLA webinars are approved for MNLA CP recertification at 1 CEU per hour of instruction attended.
How To Attend:
Join the live program from your home or office using a computer with high speed internet. You may ask questions, participate in surveys, and post comments from your computer during the program. Simple instructions with a link to the program will be emailed to you when you register. 

Reminder notifications will also be sent 1 day, and 1 hour in advance.


Register Here (Webinars are FREE for members. You must be logged in to the MNLA website using your username and password to receive the member rate.)

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