Abstract
Efforts to obtain edible-fruited passion vines through hybridization of Passiflora edulis and P. incarnata produced a population of tetraploid plants that survive freezing winters in central Georgia belowground, and grow aboveground in warm weather. One selection from this population blooms from late June or early July through October, yielding quantities of flowers from 8.5 to 9.6 cm diameter that have deep blue-colored sepals and petals surmounted by a disc of heavily-crimped filaments that are white at the outer margin. The nectar has proven a good food resource for the ruby-throated hummingbird, which breeds in much of the southeastern U.S. This clone is highly self-incompatible and sets no fruit when grown apart from cross-compatible clones. Its vines are vigorous, growing to 5 meters or more, and have dark green, markedly denticulate trilobed leaves 13 to 24.5 cm long by 15 to 25 cm wide. These afford a nursery habitat for caterpillars of 3 native butterflies, the zebra and the Gulf and variegated fritillaries. Because of its ease of culture and wide adaptation, this vine is recommended to plant in the continental U.S. for environmental enhancement.
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