Cup Plant Seeds

Silphium perfoliatum

Named after the cup shape of its leaf base, which provides water to birds and insects. Butterflies regularly visit the vibrant yellow flowers. Birds feed on their fall seeds. ~20 seeds/packet.

Please note, for Canadian customers, seeds can be sent as untracked lettermail. Our website will charge you the regular flat-rate for shipping, but if your order only contains seeds, we will refund you the excess fee above the price of the stamp.