University of Illinois Extension
Directory of Wildflowers - University of Illinois Extension

Directory of Wildflowers

Cup Plant
Silphium perfoliatum

Cup Plant
Cup Plant

Quick Profile

Exposure
Full Sun
 
Mature Height
4 - 8 Feet
 
USDA Hardiness Zones
3 - 9 
 
Native To:
Illinois
Indiana
Iowa
Michigan
Missouri
Ohio
Wisconsin
 
Soil Conditions
Moist, Well-Drained
Wet
 
Bloom Color
Yellow
 
Bloom Season
July - September
 

Features

Yellow, daisy-like flowers. The leaves are fused around the stem to form a cup, thus the common name.

Culture

Full sun; moist, well drained to wet soils.

Notes

Found in prairies and open woods. Listed as threatened in Michigan.