In this article
http://www.hort.purdue.edu/newcrop/morton/passionfruit.html#(under Climate) link is below*
it states that, "if it rains within 1 1/2 hrs after pollination there will be no fruit set, but if 2 hrs pass before rain falls, it will have no detrimental effect." From what I understand about pollination, it is good to raise the humidity level after pollination but not good to have wet pollen. Pollen must be fluffy and dry for it to be transferred and stick properly to the mother flower.
Generally speaking it seems that the regular caerulea variety works to pollinate many varieties. It depends on if the variety to be pollinated is 'sterile' though. Whether certain variety pollinations 'take' or not is apparently dependent on an interesting concept thought to do with 'plant immunity' the ability for the passiflora to recongnize (pollen)proteins that are
related to it and 'reject' pollen that is not. Its cool that plants have immune systems just like people and work similarly , people reject organs, tissues etc that are foriegn to our bodies and plants apparently do the same. I suppose if we could somehow suppress the plant's immune systems like we do people's (anti-rejection drugs etc.) perhaps we could create more hybrids, (just a crazy thought) To read more about this see http://www.passionflow.co.uk/growingtips22.htm

Here is a link that might be useful: passionfruit

Well the pollen definitely set for at least 2 hours before the rain came. Mine is definitely the yellow variety then, because it is blooming this late in the year. Darn...so the 4 yellow vines I have will not be able to pollinate each other's flowers?

It is my understanding that if you have passiflora edulis f. flavicarpa(orange fruit), cross pollination from a different clone is needed. If you have passiflora edulis sims f. edulis (purple fruits) it self pollinates. Hopefully you can find another variety to pollinate them if needed.

Here is a link that might be useful: comparison of p_edulis varieties.

Hmm do you know any nursery where I can buy an already blooming yellow passionfruit lol so I can get fruit this year?

lol so sorry kameha, I just wanted to tell you to get a regular caerulea if you get one to pollinate yours, don't get one called alto caerulea because I that one is supposed to be a sterile type. The plain old caerulea is one that can be used to pollinate several different types of passiflora so you can use it later if you decide to add more passionflowers to your collection :)

I do have one question...you know those modified leaves that protect the buds when they are young? Well some of the vines' modified leaves are green and the other vine has reddish bud leaves.

I have read that purplish/ reddish growing tips on passiflora are sometimes there for protection from radiation from the sun. If they are in full sun they may exhibit this. Have you noticed if the vines that are in shade are more green on these specific leaves and the ones in the sun are more reddish? You could also ask at the passiflora forum because they are much more expert than I ;P

I guess I should have said 'shade' as in not necessarily planted in shade but could be shaded from other larger leaves or vines :)

That is a possibility sinner gurl. You are extremely intelligent. Why the name though?

haha if I told ya I'd have to kill ya.. no really, I lived in New Orleans for a spell and they call it sin city ~ so I made up the name when I lived there. How about your name? Umm I heard/read that perhaps you were a nice hawiian girl lol?

All good advice sinner_gurl. And what is a sin to one person, is only fun to another.. And I could think of a few with you two!!! J/K As for fruit this year, well, the p. edulis flavicarpa is sort of year round flowering, so the sooner you get some different pollen ( caerulea an excellent choice) the sooner you will have passionfruits. I have harvested over 120 so far off of my one remaining 4 year old vine. No better fruit for cocktails has ever been made.

Sinner Gurl...have you been lurking on the Florida Thread?...:>)...We've changed his name from Kameha to "Miss Hawaii"...:>)...

Kameha...I was over at Lukas the other day and they had some with fruit on them. Not sure what type and don't remember the price...I probably should've bought one. I'd like a self pollenating variety though...too much other stuff to do to have to worry about that too...Z

Jetstream
I love the Fl thread ;p, I post there rarely. Tropicals are my favorite and you people know alot-have learned much. FL climate is similar to LA but of course we have that horrible clay soil to deal with and you have sand. lmao@Miss Hawaii .