Also called devil's tail, giant climbing tearthumb, Asiatic tearthumb and Polygonum perfoliatum.

Native to Asia.  Invasive > Global Invasive > in USA+Canada Invasive > report it! Invasive > in USA Invasive > in Michigan

For kids!  This plant described in invasive species placemat (.pdf) series

Learn more about mile-a-minute weed Persicaria perfoliata

Biological Control in Eastern USA (.pdf page 339) Discover Life Encyclopedia of Life Google Google images USDA PLANTS db USFS Wikipedia