Tropicals & Tender Perennials: Passiflora for fruit (P. edulis vs. P. edulis flavicarpa), 1 by passiflora07

passiflora07 wrote:
I bought a passionfruit vine at a garden show last spring intending to grow for fruit. The guy who sold it to me said it was the kind that is grown for fruit, but he didn't know the scientific name. I brought it home and planted it in my garden. It has really taken off and is covered with flowers, but I never saw a single fruit. I even hand pollinated several flowers, but still nothing. After some researching online I found the P. edulis will self-pollinate, but that P. edulis flavicarpa needs another plant to share pollen with. With more reading I found out that the flavicarpa variety is more cold-sensative and the fruit is more tart - both of which are undesirable for me.

So, now I am probably going to need to locate another passionfruit plant, and this time need to be sure that it is P. edulis, not P. edulis flavicarpa. Does anyone know how I can be sure of what I'm buying? Are there any features on the plant that I can look at to differentiate the two? Does anyone have a reliable source?

The picture is of one of the many flowers on my vine...