Family: Asteraceae

Scientific Name: Silphium perfoliatum

Common Name: Cup plant

DescriptionThe opposite leaves of this tall prairie plant form a cup that holds water.
Pronunciation(SIL-phee-um)
Plant TypeAll Plants, Wild Flowers
Hardiness Zonecold hardy to at least #5
Sunlightfull
Moistureprefers moist
Soil & Siteprefers moist and can be found along streams and moist areas, native to mesic soils
Flowersyellow daisy-like flowers are found on tall single scapes (flower stalks)
Fruitachene
Leavesopposite leaves, coarsely toothed, form a water reservoir where they join at the stem, two leaves join together around the stem (perfoliate) visited by birds and Hummingbirds.
Stemssquare stem
Dimensionsup to 8 feet, can form thick patches
Propagationmoist stratified seed
Native SiteNorth American Prairies
Misc FactsPrairie Nursery ranks this plant high for wildlife food.
Notes & Reference#09-The Prairie Garden (J. Robert Smith with Beatrice Smith), #56-Tall Grass Prairie Wildflowers (Doug Ladd), #224-Prairie Nursery web site (www.prairienursery.com)
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