Hey PAK! We took a road trip to LOGEES a few years ago. It's a little over an hour from here, a very cool place. You would never even know it was there from the front. The rumors around here are that a LONG time ago a woman planted a lemon tree and built (and built and built) the greenhouses around that. We saw that original ponderosa lemon tree and it was unbelievable - it had lemons on it bigger than a football! They also had just STUNNING huge brugmansias and lots of other plants that had been there a long time growing up and around the tops of the greenhouse structure. I almost bought the "buddist's hand" lemon tree.
Back to passiflora, we grow P. edulis "Black Knight", P. "pura-Vida", P. cerulea alba "White Crown". We had a beautiful P. "Jeannette" from Logees, but it up and died in just 2 days last summer. My guess is someone poured something they weren't supposed to into it. Our growing season here isn't long enough for the fruit to develop. Our white crown produces the most flowers - we had over 40 blooms last summer. Just one on the black knight.
We are going to try to go to Logees again this year - earlier in the season. Last time we went, many of the passiflora were sold out!
Hey Lane - where are you in Dallas? I used to work at Baylor Hospital and lived near White Rock Lake. Boy, I SURE miss that great Tex-Mex. It's really hard ( = impossible) to find up here in Connecticut!