Companies selling Silphium Species, Cup Plant, Carpenter's Weed, Indian Cup, Rosin Weed, Ragged Cup (Silphium perfoliatum)
Silphium Species, Cup Plant, Carpenter's Weed, Indian Cup, Rosin Weed, Ragged Cup (Silphium perfoliatum)
This item is available from the following companies:
| Company | Offering |
| A Thousand Flowers (Snohomish, Washington) Learn more about A Thousand Flowers. Purchase this from A Thousand Flowers's website | Seeds |
| Accents for Home and Garden (Pepper's Greenhouse) (Milton, Delaware) Learn more about Accents for Home and Garden (Pepper's Greenhouse). Purchase this from Accents for Home and Garden (Pepper's Greenhouse)'s website | Plants |
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