cow parsnip sosnowski

against background beauty blossoms botany close cow danger dangerous day ecology field flowers furanocoumarin giant giganteum green heracleum hogweed invade invasive large leaf meadow nature outdoors parsnip perennial plant plants poisonous rhubarb rural seed silage skin sky sosnowski sosnowsky sosnowskyi stem sting summer the toxic uncultivated weed white wild wildflower