Home Prairie and Wetland Center
16245 South Hwy. 71
Belton, MO 64012
Tel: (816) 331-9738
Fax: (816) 331-9739

Silphium perfoliatum

Cup Plant

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Silphium perfoliatum (Cup Plant)

Unlike other silphiums, this plant is distinguished by its pairs of cup-forming leaves which clasp the square, central stem and hold water after a rain or heavy dew. Birds and insects are often seen sipping from the "cups." In summer, the plant blooms with soft yellow 3" flowers born atop stout stems.

Additional Information:


Height
48-96 Inches

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Spread
12-36 Inches

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Bloom/Seasonal Color
Soft Yellow


USDA Hardiness Zone 4-8

Home Owner Growing and Maintenance Tips:

Good Companions
Marsh Milkweed (Asclepias incarnata), New England Aster (Symphyotrichum novae-angliae), Downy Skullcap (Scutellaria incana), Northern Sea Oats (Chasmanthium latifolium)

Characteristics & Attributes

Hydrologic Designation

FACW-

Nature Attracting

Songbird

Season of Interest

Late (July-frost)

Soil Moisture

Moderate
High

Sun Exposure

Full Sun
Medium Sun/Average Shade

USFS MO Ecological Map

Wildlife Benefit

Food/Birds