blooming inflorescence of giant hogweed, poisonous weed, outstanding by its aggressive spreading, powerful growth and high surviva

abandoned abundant aggressive agressive and apiaceae blooming botany cow danger dense ecology environment field flora flower foliage giant giganteum green growing growth harm harmful heracleum herbaceous high hogweed inflorescence invade invasive its large leaf meadow nature neglected outstanding parsnip phototoxic plant poisonous powerful rapid specie spreading stem summer sunlight surviva survivability thicket trees umbelliferous uncultivated weed widespread wildflowers