Its flowers are white and normally held upright in short inflorescences. This rapidly growing plant is quick to shade out native species and garden cultivars. Japanese knotweed is an invasive species spreading in Southwest Michigan. We administer grants that make communities healthier, safer and more vibrant. Thanks to a grant through the DNR, regions across the state are forming cooperatives to address the pesky plant. These grants enable our local partners to promote the lifestyles we all enjoy by providing recreational opportunities, enhancing wildlife habitat and ensuring public safety. You’ve probably heard the names of a few of the invasive species that plague Michigan: zebra mussels, emerald ash borers, phragmites. Invasive Species in top image, from left to right: Japanese knotweed, European frog-bit, Black swallow-wort, Garlic mustard, Phragmites. Japanese knotweed, Japanese bamboo. Invasive Species in top image, from left to right: Japanese knotweed, European frog-bit, Black swallow-wort, Garlic mustard, Phragmites. How to get rid of Japanese Knotwood (Michigan Bamboo) Asked May 31, 2013, 11:24 PM EDT I have a 40foot by 60foot area in my back yard infested with this aggressive invader. of Natural Resources site, there is a link on their website to report invasive species, and Japanese Knotweed … You’ve probably heard the names of a few of the invasive species that plague Michigan: zebra mussels, emerald ash borers, phragmites. Class C noxious weed California. Large, alternate leaves, with pointed tips are also distinctive. The plant we're talking about is called Japanese knotweed. Japanese Knotweed (Fallopia japonica) also called (Polygonum cuspidatum) is identified by its jointed stem, with a whitish bloom, that can be 20mm (3/4 inch) in diameter. It takes over roadsides, residences and community recreation areas, threatens our stream banks and Incidentally, the following link to the Michigan DNR PDF on Japanese knotweed (where I obtained most of my information) contains more information on destruction of this plant including effective chemicals that can be used to destroy the underground rhizomes. Japanese knotweed ... (University of Michigan - Dearborn) (POCU6) USDA Forest Service Fire Effects Information System (POCU6) ... (DNR) (POCU6) NPCI Alien Plant Working Group: abstract & image (POCU6) 2yrs ago the extension told me to cut it off and poor concentrated Round up in. As with any invasive, a multi-pronged, long-term approach is needed to eradicate the plant. The Mid-Michigan Cooperative Invasive Species Management Area (MM-CISMA) was established in April 2016 by the Ingham Conservation District through funding from the Michigan Invasive Species Grant Program.The CISMA covers Ingham, Clinton, Eaton and Ionia counties and creates a partnership between the four county conservation districts and over 30 local organizations. Photos via Creative Commons. Hello, Sorry to hear you are dealing with Japanese Knotweed. I am including a link below to the DNR web site which provides more information on control methods for Japanese Knotweed. leaves. In checking the Michigan Dept. Photos via Creative Commons. The seeds are three parted and thankfully not all of them are fertile. Japanese knotweed (Polygonum cuspidatum) is a non-native invasive species that threatens our community. Parted and thankfully not all of them are fertile to the DNR web site which more... 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