a man in protective clothing sprays herbicide on a cow parsnip

allergen berenklauw botany cow danger dangerous destroy destruction economy environment farm fight flat floral flower furanocoumarins grange grass green harmful heracleum herbicide hogweed homestead house illustration irritation landscape leaf leaves male mantegazzianum outdoor outdoors parsnip people phototoxic phytophotodermatitis plant poisonous protection ranch season skin sprayer stem summer toxic vector village weed wildflower