flowers of impatiens glandulifera himalayan balsam

039 annual areas balsam biodiversity biological blossom bobby botanical botany closeup common considered european finland flora flower flowering flowers glandulifera grow hatshaped helmet herb himalayan himalayas impatiens inflorescence invasive jaacurren large leaf many meadow native natural nature palsami petal pink plant policeman pollination purple roadside rural species threat tops ttipalsami vegetation weed wild wildflower