Not surprised they were hollow Mike, thats a common problem with passiflora in this country. If they had set properly I'd say they would have ripened and fallen in October / November 😁
I think the short growing time from July to October when the weather started to get really cold may be the main factor Brett. Passionflowers need a long growing season with warm temperatures to produce high-quality fruit. In the UK, the growing season may be shorter or cooler than ideal, impacting the fruit's interior development.
As far as I know Edulis and incarnata pollen is not compatible Logan so they unlikely to be hybrids from those two, more likely to be hybrids created from crossing with other hardier varieties
From what I have read, the Cooltropics (hybrid P. incarnata) is the combination of P. incarnata (which can withstand temperatures as low as -15°C) X (typically tropical Passiflora edulis (the purple passionfruit) or Passiflora quadrangularis (the giant granadilla), which contribute tropical traits like larger flowers, showy colours, and distinctive flavours in the fruit. P. Snowstar is the combination of P. incarnata X P. caerulea which can (withstand temperatures as low as -15°C) and the potential to bear edible fruits. The hybrid P. incarnata and the P. Snowstar are not self-fertile, but they are good cross pollinators for each other.
Passiflora Incarnata is native to temperate regions of north america. It grows wild in my back yard, USDA zone 7 on the east coast. Winters are colder here than most of England. The plants usually turn yellow and die in the fall going deciduous. They explode back in the spring. Ive never seen fruits in the ones that grow in my yard. Be careful with them. In the US they are EXTREMELY aggressive growers. They are known to really take ovwr and can spread 30+ feet through underground rhizomes showing up where you wouldnt expect. You may lack the intense heat and humidity of our summers so mayne theres less risk of them taking over, just be warned they might take over!
@myexoticfoodplants6727 Good luck. I've never tried one myself still, but the flowers are gorgeous. The bumblebees love them and bury themselves in the pollen.
It looks like they're dying down for the cold. Those you picked are not even fully developed or ripe yet. The fully developed will have all white seeds filled inside the fruit. Ripe ones will be yellow filled fluid sac surrounding the black seeds and highly fragrant. It makes sense when my mom complained that my sister picked a whole bag of empty ones for her. My mom was so mad.😂I was like I don't know, maybe she doesn't know how to pick them. When I picked them, I would smell for their fragrance before picking them or wait till they drop off. The ripe ones are more heavy and yellow green tone skin. If you water them regularly, they'll rewards you with lots of ripe fruits.
@LoganShelton-rh3lp and @lyonheart84. Here is a reply to my post in a ‘Cold Hardy Passiflora group’ from Raphael Maier. “Ok so I am the breeder who selected the Passiflora Cooltropics Snowstar. So let me explain a few points: (1).Both Snowstar and EiaPopeia are pure P. incarnata and no hybrids. They are only selections out of seedlings. (2).Then your fruit were not hallow, they were simply not ripe. In the UK climate P. incarnata fruits need to form at the latest in July, every fruit which formed later will not ripen. They need under good conditions, 3 months to ripen. The seeds form quite late and the yellow arils (which you eat) form at the end. So, your fruits were simply far from ripe. By the way they will fall off when ripe. So, what I would advise you to do is either grow them in a greenhouse or in a really sunny and hot spot. In general, Passiflora incarnata is not well suited for the UK. The problem is not the winter cold but the lack of summer heat.
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Not surprised they were hollow Mike, thats a common problem with passiflora in this country. If they had set properly I'd say they would have ripened and fallen in October / November 😁
I think the short growing time from July to October when the weather started to get really cold may be the main factor Brett. Passionflowers need a long growing season with warm temperatures to produce high-quality fruit. In the UK, the growing season may be shorter or cooler than ideal, impacting the fruit's interior development.
Edulis x. Incarnata?
Whats the expected cold tolerance?
As far as I know Edulis and incarnata pollen is not compatible Logan so they unlikely to be hybrids from those two, more likely to be hybrids created from crossing with other hardier varieties
From what I have read, the Cooltropics (hybrid P. incarnata) is the combination of P. incarnata (which can withstand temperatures as low as -15°C) X (typically tropical Passiflora edulis (the purple passionfruit) or Passiflora quadrangularis (the giant granadilla), which contribute tropical traits like larger flowers, showy colours, and distinctive flavours in the fruit.
P. Snowstar is the combination of P. incarnata X P. caerulea which can (withstand temperatures as low as -15°C) and the potential to bear edible fruits. The hybrid P. incarnata and the P. Snowstar are not self-fertile, but they are good cross pollinators for each other.
I would like to grow them as well🤔
Can be easy as growing tomatoes if you can get plug plants.
Passiflora Incarnata is native to temperate regions of north america. It grows wild in my back yard, USDA zone 7 on the east coast. Winters are colder here than most of England. The plants usually turn yellow and die in the fall going deciduous. They explode back in the spring. Ive never seen fruits in the ones that grow in my yard.
Be careful with them. In the US they are EXTREMELY aggressive growers. They are known to really take ovwr and can spread 30+ feet through underground rhizomes showing up where you wouldnt expect.
You may lack the intense heat and humidity of our summers so mayne theres less risk of them taking over, just be warned they might take over!
Thanks for the info LC. One of my reason for growing my Passiflora incarnata in a container is to control invasion via the roots.
@myexoticfoodplants6727 Good luck. I've never tried one myself still, but the flowers are gorgeous. The bumblebees love them and bury themselves in the pollen.
It looks like they're dying down for the cold. Those you picked are not even fully developed or ripe yet. The fully developed will have all white seeds filled inside the fruit. Ripe ones will be yellow filled fluid sac surrounding the black seeds and highly fragrant. It makes sense when my mom complained that my sister picked a whole bag of empty ones for her. My mom was so mad.😂I was like I don't know, maybe she doesn't know how to pick them. When I picked them, I would smell for their fragrance before picking them or wait till they drop off. The ripe ones are more heavy and yellow green tone skin. If you water them regularly, they'll rewards you with lots of ripe fruits.
Thanks for that tip kkn, regular water was an issue last year. Hope the vines will take off quicker this year.
@LoganShelton-rh3lp and @lyonheart84. Here is a reply to my post in a ‘Cold Hardy Passiflora group’ from Raphael Maier. “Ok so I am the breeder who selected the Passiflora Cooltropics Snowstar. So let me explain a few points: (1).Both Snowstar and EiaPopeia are pure P. incarnata and no hybrids. They are only selections out of seedlings.
(2).Then your fruit were not hallow, they were simply not ripe.
In the UK climate P. incarnata fruits need to form at the latest in July, every fruit which formed later will not ripen.
They need under good conditions, 3 months to ripen.
The seeds form quite late and the yellow arils (which you eat) form at the end. So, your fruits were simply far from ripe. By the way they will fall off when ripe.
So, what I would advise you to do is either grow them in a greenhouse or in a really sunny and hot spot.
In general, Passiflora incarnata is not well suited for the UK. The problem is not the winter cold but the lack of summer heat.