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Passiflora edulis Sims f. edulis (Passiflora verrucifera) and Passiflora edulis f. flavicarpa and various selections of the species or hybrids between the two, are the most widely grown Passiflora worldwide for commercial sales of both edible fruit and juice. Shown here Passiflora edulis ‘Nancy Garrison’. A hardy selection of Passiflora edulis but not hardy by UK standards and lost in a very mild winter. Hybrids of course have characteristics of each, but generally flower during one long season with variable opening times each day and dates. A noted USA hybrid is Passiflora edulis ‘Frederick’ by Patrick Worley. It is only partially self fertile though and may need hand pollination to set fruit. In UK a Passiflora edulis selection, P. ‘Ester’, which originated in South Africa in 1995 is excellent and widely available. Read more about which Passion fruit are edible, some are toxic, and which are widely commercially available.
To differentiate between the two species see below.