Ragwort

12" tall wildflower with yellow daisy flowers. The plant is biennial or perennial. The stems are erect, straight, have no or few hairs, and reach a height of 0.3-2.0 meters. The leaves are pinnately lobed and the end lobe is blunt. The hermaphrodite flower heads are 1.5-2.5 cm diameter, and are borne in dense, flat-topped clusters; the florets are bright yellow.
Pollination is by a wide range of bees, flies and moths and butterflies. Over a season, one plant may produce 2,000 to 2,500 yellow flowers in 20- to 60-headed, flat-topped corymbs. This number of seeds produced may be as large as 75,000 to 120,000, although in its native range in Eurasia very few of these would grow into new plants and research has shown that most seeds do not travel a great distance from the parent plant.