knotweed reynoutria sprayed herbicide close-up roundup destroys leaves leaf spray invasive village house detail and

knotweed reynoutria sprayed herbicide closeup roundup destroys leaves leaf spray invasive detail fallopia japonica sakhalin japanese drought expansive species dangerous plants village house way path stem asia japan sachalinensis intruder neophyte reduces biodiversity botany eliminates herbicides mechanically contamination disaster calamity gatecrasher biomass europe green nature flower bushes ecology environmental