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Silphium perfoliatum

Common Name(s):
Compass-plant, Cup-plant
Categories:
Perennials, Wildflowers
Comment:

Tall and large, this plant is good for prairie, native or wildflower gardens and naturalized areas. May self-seed.

Season:
Summer into fall
Height:
4-8 ft.
Flower Color:
Yellow
Hardiness:
3-9
Foliage:
Two upper leaves surround the flower stalk, forming a shallow cup; large, rough, deeply pinnatified leaves; coarsely toothed lower leaves contract into a winged stalk; smooth, square stems
Flower:
2 to 3 in. flower head with 20 to 30 yellow petals
Site:
Open woods, meadows, prairies, thickets
Propagation:
Self-seeding
Exposure:
Sun
Soil:
Clay, wet soil
Regions:
Southeastern US
Tags:
sun, summer, yellow

NCCES plant id: 2731

Silphium perfoliatum Silphium perfoliatum bloom detail
Debbie Roos