California Knotweed

Description

Polygonum californicum-is a species of flowering plant in the-buckwheat family-known by the common name-California knotweed. It is native to the west coast of the United States from-Washington,-Oregon, and northern and central-California-in the-Coast Ranges-and-Sierra Nevada foothills-as far south as-Napa-and-Tulare Counties. It can be found in many types of open habitats Polygonum californicum is an annual herb producing a slender, angled stem which grows erect to a maximum height near 40 centimeters. The narrow, pointed leaves are mostly located on upper branches of the stem. The leaves have fringed, bristle-tipped stipules attached to their bases. Solitary white or pink flowers occur in upper leaf axils.