Seeds for the World - GARDENS NORTH - Catalogue
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Searching Genus for SILPHIUM

20 species of tall perennials native to North America with starry, sun-flower like heads and interesting foliage. The leaves, particularly on young plants, are erect and oriented so that the edges point north-south and the flat surfaces face east-west. Hence the common name. The midday sun, therefore, strikes the narrow edge of the leaves. The sap of many species contains resin.

SILPHIUM perfoliatum New Late Summer3287
Cup Plant2.4m  Zone: 3
Native from Ontario into the southern USA and found in damp to moist soil in open woodlands or prairie. Multi-stemmed and erect, in a massive clump from a woody rootstock. Beautiful large, cuplike, perfoliate leaves which collect rainwater and account for the common name. An abundance of yellow daisy flower heads, often to 8cm wide. Ordinary soil in light shade.
Germination Instructions: Seed requires cold treatment.
15 seeds  $4.00   Sorry...Sold Out

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