Sun Exposure: Full
Soil Moisture: Dry, Moist, Wet
Soil Type: Wet to mesic soils. Will tolerate clay soil.
Bloom Time: July-September
Bloom Color: yellow
Attracts: Butterflies, Bees, Hummingbirds, other Birds for seeds and water
Pollinator benefit: good for all bee types; provides nesting material for native bees; good nectar plant
Cup Plant (Silphium perfoliatum) is a coarse perennial, with numerous large, yellow composite flowers. This plant can grow as tall as 9 feet. Each flower head has 20-30 yellow rays and darker yellow disks. Stout leaves are joined at stem to form a small cup that holds water and attracts birds. This plant easily spreads via seeds.
The small cup formed by the leaves holds water and attracts birds.
info from www.wildflower.org