The Redshank (Persicaria maculosa, formerly Polygonum persicaria) is a perennial plant from the Knotweed family Polygonaceae. It is also called Persicaria, Redleg, Lady's-thumb, Spotted Ladysthumb, Gambetta, and Adam's Plaster in Newfoundland. Native to Europe, it is an invasive species in the Great Lakes region where it was first spotted in 1843.
Read more about Persicaria Maculosa: Species, Growth, Distribution, Cultivation and Uses