close up of the leaves on the branches of knotweed (fallopia japonica

knotweed fallopia japonica branches leave leaves wild plant wildflower natural flower naturopathy fresh pest medicinal neophyte alternative medicine invasive foliage nature herb table food raw blossom flora herbal tree branch edible green bloom remedy healthy japanese wooden leaf foraging medicative intruder vein shoot environment nuisance botany closeup view herbaceous damaging close colors brown