Knowledgebase

Jumping Worms #879904

Asked August 02, 2024, 1:12 PM EDT

Hello, this week I have identified a small number of jumping worms in one of my garden beds. I have reported them to the DNR, been put on the map of locations found, and completed the worm ranger online module on the extension website. Today I tested several areas using the mustard method to collect worms to see if I could get a better sense of population. I really have only found 8-10 adult worms. The smallest ones collected today are not identifiable due to their size. I seem to be at the beginning of an infestation as I’ve been careful, and have been watching for these worms every year since learning about them. My question is, since I seem to have a small amount of worms, what steps can I take now to keep them from becoming a huge problem? I had planned to spread mulch, which I am now going to skip, should I try spreading the coconut mulch? I read that can be a deterrent. Are there any other steps I can take to limit the numbers now this year before they spread? I’ve used alfalfa pellets in my gardens before as mulch/fertilizer-would it be worth purchasing bags of them and spreading as that was also listed as a deterrent. The garden I’ve found them in is a dryer space under two large silver maples. I have a mix of hosta, lungwort and a few other items in that space. It is pretty shady so I don’t think applying plastic over the soil to heat it would work well. Not other spaces showed evidence of the worms. I did talk to the neighbor on that side as my garden is against their fence and I know they have hosta on the other side… if they do nothing to limit numbers am I going to be fighting a losing battle? He said he was aware of such a worm, and thinks he may have found one as well, but had convinced himself he was wrong. I suspect he did find one. Thanks for connecting me with someone who can provide direct advice. I have read all the info online, I’m just looking for someone else with experience who can advise me. Thanks.

Hennepin County Minnesota

Expert Response


Thanks for your question. It is very important from remedial perspectives that you are ABSOLUTELY SURE that you have jumping worms. Look closely for the distinguishing white clitellum. You may have already done this.  Nevertheless, see the following:

https://www.dnr.state.mn.us/invasives/terrestrialanimals/jumping-worm/index.html - :~:text=Appearance,head than in other earthworms.

https://extension.umn.edu/identify-invasive-species/jumping-worms

If you are very confident in your identification, you may have a challenge facing you in trying to rectify the situation.

If for your own comfort you would like to directly talk to someone, contact the Minnesota Department of Natural Resources (DNR), <personal data hidden> or try calling her at<personal data hidden>.

Good Luck.  Thanks for contacting us,  If you have further questions or if you have additional questions.  please get beck to us.


An Ask Extension Expert Replied August 03, 2024, 7:56 PM EDT
Thanks for the reply. I’ve already been in contact with Laura and she confirmed the ID for me.  

I’ve completed the Worm Ranger training online and have done the mustard test in various gardens in my half acre lot.  

Are there any Master Gardeners who have jumping worms in their gardens that are available for advice?  I know there were two gardens on the learning tour this year that had confirmed jumping worms.  

Thanks again,
Jessica


Sent from my iPhone

On Aug 3, 2024, at 6:56 PM, Ask Extension <<personal data hidden>> wrote:


The Question Asker Replied August 03, 2024, 10:04 PM EDT

Thanks for getting back to me. It appears that you are nicely covering all bases. Members of this forum are scattered throughout all Minnesota. For this reason, it is not feasible for individuals to make on-site visitations. However, I would suggest that you directly contact the Hennepin County Extension Office as I believe that they may be able to satisfy your request. See:

https://extension.umn.edu/local/hennepin

Thanks very much for consulting with us.

An Ask Extension Expert Replied August 04, 2024, 12:58 AM EDT

Loading ...