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Michigan's Invasive Species Community

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Hi Shelby,
ISN's management is mainly working with Road Commissions to mow when it first starts flowering (now/a week ago) to prevent spreading by seed.  That said, in a past life with the Park Service I used the herbicide Plateau (imazapic) to great effect; took a year or two (small patch), but left the grasses alone.  It's not aquatic-approved.

We use Plateau here at the Boardman River Nature Center to keep spurge out of the gardens, but don't do any larger-scale treatments.

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