a pink ribbon marks a knotweed plant in preparation for herbicide application

american application asian bamboo begins biodiversity branch clusters curse cuspidatum donkey ears elephant fallopia fleece fleeceflower flower flowers fungus green hancocks heartshaped herbicide himalayan huzhang infestation intruder invasive itadori japanese japonica knot knotweed leaves marker marks mexican monkey monkeyweed pain pea perennial pink plant plume polygonaceae polygonum preparation remove reynoutria rhubarb ribbon sally shooters stem summer threat vine weed white wild zigzag