Cup Plant (Silphium perfoliatum)-Hort Answers - University of Illinois Extension

Cup Plant
Silphium perfoliatum

5 pictures total.

Cup Plant

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.

Mature Height

4-8 Feet

Native To:

Illinois
Indiana
Iowa
Michigan
Missouri
Ohio
Wisconsin

USDA Hardiness Zone

3 - 9

Bloom Color

Yellow

Bloom Season

July - September

Soil Conditions

Moist, Well-Drained
Wet

Exposure/Light Requirements

Full Sun

Pests and Problems

Environmental Damage

Additional pests and problems that may affect this plant:

No serious insect or disease problems.

Additional Notes

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