Silphium perfoliatum
Cup Plant
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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:
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Height |
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USDA Hardiness Zone 4-8
Home Owner Growing and Maintenance Tips:
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Good Companions
Marsh Milkweed
(Asclepias incarnata),
New England Aster
(Symphyotrichum novae-angliae),
Downy Skullcap
(Scutellaria incana),
Northern Sea Oats
(Chasmanthium latifolium)
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Characteristics & Attributes
Hydrologic Designation
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Nature Attracting
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USFS MO Ecological Map |
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Wildlife Benefit
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