Cup Plant

Silphium perfoliatum (Cup Plant)

Silphium perfoliatum(Herbaceous Perennial)

Unlike other silphiums, Cup 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, Cup Plant blooms with soft yellow three-inch flowers born atop stout stems.


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Tough native adapts to variety of sites
Interesting foliage
Attracts songbirds and butterflies

Height

48-96 Inches

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Spread

12-36 Inches

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Interesting Notes

Don't mistake this sunny looking yellow flower for a sunflower. You can tell the difference by breaking a stem to find a sap or "rosin."


USDA Hardiness Zone 4 - 8

Great Companions

Sweet Coneflower Sweet Coneflower (Rudbeckia subtomentosa )
New England Aster New England Aster (Aster novae-angliae )
Big Bluestem Big Bluestem (Andropogon gerardi )