Aristolochia macrophylla (durior)

A classic Appalachian native vine for shading porches, we have it on a big silver maple and it is reaching for the canopy. It is quite a sight when in flower and even better when you can look up and see dozens of Pipevine caterpillars clinging to the underside of the leaves, true they prefer A. clematis but macrophylla has the advantage of extra biomass, eliminating the defoliation problem. Our colony of Philenor now seems permanent.