himalayan balsam - impatiens glandulifera invasive riverside plant

annual balsam balsaminaceae bank beautiful beauty biodiversity biological blooming bobby botanical botany closeup colorful ecosystems european floral flower fresh garden glandulifera glnadulifera himalaya himalayan invaded invasions invasive leafs leaves natural nature petal pink plant policemans purple red roylei rural species spring summer threat tops vibrant violet white wildflower