himalayan knotweed koenigia polystachya, blooming plant

bears botanical cultivar cultivated endemic family flora flowering flowers habitatn herb hybrid inflorescence invasive knotweed leafy natural pale panicles perennial persicaria pink plant polygonaceae rhizomatous shoots species stems used variety vegetable wallichii white wild himalayan koenigia polystachya blooming habitat flowersâ polygonaceae panicles species vegetable habitat