The plant in the photos is motherwort (Leonurus cardiaca). It is an introduced herbaceous perennial in the Mint family that is found throughout Michigan. This plant reproduces both by seed and rhizomes (underground stems).

Control options include mechanical and chemical means. Repeated hand pulling, mowing and/or cultivation can help deplete the extensive root system over time and prevent seed production. Diligence will be needed to achieve control in this manner. There are no known concerns with removal of this plant by hand. Some people do get contact dermatitis from a wide variety of plants including motherwort, so wearing gloves would be advised. If you are a person with particularly sensitive skin consider also wearing pants and long sleeves. 

There are no special instructions for disposal, however since this plant is already flowering, consider moving it away from the site to prevent any seed additions.

Either a broadspectrum herbicide that kills all plants (like glyphosate) or a selective herbicide that targets broadleaf weeds (e.g. 2,4-d, dicamba, triclopyr, etc.) could be used to control this weed. There are benefits and detriments to both types, but both herbicides will result in off-target injury to other species. With any herbicide application, it is critical to read and follow all labeled instructions.

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