@Shad Burns I'm curious, where did you buy your seeds or vines from? I grow them too, and I'm always curious about the source of passiflora incarnata, when grown successfully in zone 5/6. Mine were selected from the wild, in Michigan, Indiana, and Ohio. I'm always interested in hardier strains. @Helene Albert I am in zone 5b, Chicago suburbs, literally a stone throws away from you. I grow passiflora incarnata successfully. I have fruit that's ready to harvest at end of August continuing through to October. It's truly a may sprouting perennial for me. If anyone is growing passiflora incarnata in zone 4/5/6a, please send me a message through Houzz by clicking my profile. I cannot send messages by default to most people, because messages are not enabled by default in Houzz until you go to your profile and enable them under "advanced settings." You should be able to send to me, however. I collect hardy passiflora incarnata. There is some genetic variation. Even the white version of P. incarnata aren't the same, with at least 5+ different strains floating around.

What a coincidence. Well maybe it's because all of us are seeing passionfruits, I am too! I have about 1000 feet of fence around my garden, and have been watching the wild P. Incarnata fruit developing, wondering if I should intentionally plant more to make use of all that bare fencing. The best of mine have gotten about tennis ball size. They don't really get yellow, purple, or red like the tropical varieties, they are usually green when they get ripe. BTW, just wait till they fall off by themselves, or with a slight shake, as that is when they are ripe enough for eating. Don't try to pick them before they are ready, for a unripe one is insipid, dry, or flavorless. A ripe one is sweet-tart, with many black/brown seeds. You can swallow the seeds if you like, they are harmless, or simply place the fruit pulp in a blender with a small amount of water, pulse a few times, trying not to break the seeds, and strain off the resulting juice for drinking or cooking purposes. P. Incarnata is reliably hardy here, and can really become a pest in a perennial garden, or in strawberries where I've been dealing with them as a weed. I have been able to pull out suckers with almost a foot of pale white stem, and do this regularly, for several years off the same plant. I'm thinking this would make the best propagation material, and they should root easily. I will try this today to see what happens. It just so happens that this weekend I did some research into whether this fruit has been improved horticulturally. During the 80's, I owned a tropical fruit orchard in the Virgin Islands, and have grown the yellow-fruited P. Edulis, which I must say is far superior in color, flavor, and productivity compared to our local Incarnata. My research was 'fruitful', in that I was able to get wind of info that told me USDA did some work hybridizing the tropical passionfruit with 'Maypops', to come up with something they coined 'passion-pops'. Sunday I wrote to them and requested further information, but no response yet. If I get anything, I'll spread the news, you can click below to read the article. Jay

Just in case it matters, I live in DFW, and the maps I've found suggest that I'm in zone 9a.

Hi all, I have a red Passion flower in a container which has not flowered for two years.. It set the buds but the bracts were empty and then they fell off. May be there was some fungal infection? Many leaves also became brown and fell off... I pruned it and Now the plant is putting out new growth.. I am in Pune, India... Very hot and dry right now ... Max temp 42 c ... Should I repot now or wait till monsoon? Does Passion flower need acidic or alkaline soil? Not sure what is required for these plants flower regularly. Please help Thankyou