--- Jason and Tina in Patterson, New York A. Camus Grass family (Poaceae) NATIVE RANGE Japan, Korea, China, Malaysia and India DESCRIPTION Japanese stiltgrass, or Nepalese browntop, is an annual grass with a sprawling habit. Invasive Japanese stiltgrass impacts our environment in a negative way . Japanese stiltgrass (Microstegium vimineum), also called Nepalese browntop, is an aggressive invader of forest lands throughout the eastern United States.Infestations can impact the diversity of native species, reduce wildlife habitat, and disrupt important ecosystem functions. Common lespedeza, also known as Japanese clover, (Kummerowia striata, syn. The problem is that Japanese stiltgrass takes over and crowds native plants out. It has dark green trifoliate (arranged in threes) leaves with three oblong, smooth leaflets. Japanese Stiltgrass Microstegium vimineum (Trin.) Our lawn is being invaded by Japanese Stilt grass! Nimblewill goes dormant in the fall and looks straw-like then begins to green up again in spring. I want to share some of the information I learned, especially as it relates to Japanese stilt grass (Microstegium vimineum), which I wrote about last week.Since Japanese stilt grass is an annual grass, the primary goal is to prevent it from producing seeds. The stems are wiry. Japanese grass, also known as stilt grass, is a prolific, invasive species that arrived in the United States from Japan, perhaps in packing materials, about 1900. Japanese stiltgrass can often become invasive in areas that have been disturbed, are damp or near water, and have a range of light from completely shaded to sunny. The stems are wiry. It germinates in spring and grows slowly through the summer months, ultimately reaching heights of 2 to 3½ ft. A. Camus , is an invasive species found primarily east of the Mississippi River in at least 24 states. The tiny seeds are carried on hikers’ shoes, cars, ATVs, and logging and road maintenance equipment. A: Japanese stiltgrass, Microstegium vimineum (Trin.) Japanese stiltgrass (left), Nimblewill (right) Nimblewill Photo: Ohio St. Weed Lab, The Ohio State University, bugwood.org. Lespedeza striata) is prostrate summer annual that forms 15-18 inch patches. From forested floodplains to forest edges, stream banks, fields, trails and ditches, it is known for colonizing lawns and gardens too. This annual reaches 2.5-3 feet high, and its leaves are 2-4 inches long, and ¼ to ½ inches wide, with a whitish midrib. We've been told that herbicides are the best way to get rid of it, but we don't want to kill everything else in the yard. Originally from Asia, Japanese stilt-grass (Microstegium vimineum) likely arrived in the U.S. as packing material for porcelain. It manages to replace native vegetation in a lot of ecosystems. We've tried pulling it up by hand but can't seem to get it all. WHERE IT GROWS. HELP! Growth habit Life cycle. Basically nothing eats Japanese stiltgrass. Even deer avoid it. It has a wiry stem from which sprout thin, pointed, lime green leaves that grow about 4 inches long. Japanese stiltgrass (also known as bamboograss flexible sesagrass, Japanese grass, Mary’s grass, microstegium, Nepal microstegium, Nepaleze browntop, or Vietnamese grass) is a summer annual commonly found in shady, moist areas, and is spreading rapidly in woodlands as well as shaded landscapes and low maintenance turf throughout the southeastern United States, Mid-Atlantic States … Perennial, warm season grass. A prolific seeder with a sprawling growth habit, it is often found growing along trails and roads, quickly spreading to the forest understory. Keep pulling! Japanese stiltgrass is an annual weed that is also known as Nepalese browntop and Asian stiltgrass. 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