Aristolochia macrophylla Seeds
There are only two aristolochia in the mid-Atlantic region that are able to provide food for the Pipevine Swallowtail Butterfly larvae, and this is one of them. (The other is A. serpentaria.)
A native perennial vine with large, overlapping heart-shaped leaves. Unusual, 2″-long, yellow-burgundy flowers resemble smoking pipes. Quickly provides dense cover for porches, trellises, fences, walls, and more. Twining stems need a sturdy support to grow on.
Full-part sun. Height and spread 15-30′. Cut back late winter. Eastern US native. Zones 4-9.