I've had an incense for the last 4 years.. Have tried hand polination with anything else that bloomed- Mine's just a pretty face I'm afraid, but I have heard of others who will set fruit.

Dunno about your red one without it's name.

Incense is not self-fertile, and most clones of it are not very fertile at all. I hand pollinated mine this past year about 60 times! with incarnata pollen, without any luck. It did set one small fruit from a flower that I did not hand pollinate, but it did not set until almost all of my wild incarnatas had stopped flowering around Labor Day. Not sure where the pollen came from. I cut off the developing fruit with about a foot of stem when cold weather set in and kept it in water indoors until my patience ran out a couple of weeks ago. I cut it open and found 5 mature seeds and several immature seeds.

All of the commonly available red passionflowers are very likely to NOT be self-fertile, but all should produce edible fruit when cross-pollinated with suitable pollen.

~kiwinut