Garlic mustard: A Minnesota woodland owner’s story

Garlic mustard is an exotic invasive plant in Minnesota.  Where well established, it can seriously inhibit regeneration and growth of not only understory plants, but also trees.  In this video Delano, Minnesota landowner John Peterson shares his story about working to control garlic mustard in his woodland.

Below John’s video, you’ll also find a video and links with more technical information about garlic mustard control.

Garlic mustard: A Minnesota woodland owner’s story:


Controlling the spread of garlic mustard:


More info:

Eli 's work addresses Minnesota forest ecology & management. He's based in St Paul.

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  1. I feel your pain. I am in an Oriental Bittersweet hotspot!!! As well as garlic mus., barberry and … you name it takes over. I am seeing some serious displacement of native species. Virtually no forest regeneration! People do not see the individual plants… they just see “Green.” They think everything is fine!
    It’s really bad over here in the Berkshires! Shade please save us!

  2. Here’s a bit more from John Peterson on controlling garlic mustard in the fall:

    November Garlic Mustard Advice:

    November is a great time to scout and kill Garlic Mustard. The first year plants are still as green as grass and virtually all other vegetation has lost their leaves; they are really easy to see. We spray any first year plants found with a 2% Roundup solution. It needs to be above freezing to spray. If you have only a few plants or it is too cold, you can dig them out.

    Ideally go over the area two weeks later to spray or dig plants that you have missed (we always miss some plants). The plants you have sprayed should show some signs of stress. The plants that are killed this year will result in less plants that you MUST find next spring and pull out before they go to seed. It is very important to continuously go over areas because it is near impossible to find them all at once. Scout all areas to make sure you get any satellite patches that have gotten started.

    Also keep your eyes pealed for second year plants that have gone to seed. The standing plant stalk with empty seed pods are easy to see. I missed three of them this year! These sites are marked with a flag and logged into a spreadsheet to insure they are visited next spring after the seeds germinate.

    You can spend the remainder of the winter dreaming that the seed bank will drop next spring!