knotweed or polygonum aviculare. on white

nature wild knotgrass polygonum aviculare birdweed lowgrass herb green grass white stem growth knotweed flora crawls botany medicine isolated plants authentic botanical isolate herbal edible foliage fresh healthy diuretic ingredient medicinal organic phytotherapy infusion dock buckwheat invasive pigweed alternative antimicrobial antiseptic carotene tannins aviculare isolated background