How do I get the passion flower to bloom?
I would look, first, to a fertilization issue. They will need higher amounts of phosphorus, and potassium to flower properly. An all purpose will be ok, though.
Here is a link that will help: https://www.gardeningknowhow.com/ornamental/vines/passion-flower/passion-flower-not-fruiting.htm
I planted a vine with white and purple. It was a much smaller flower than I was used to. I lost my original in a freeze, unusual in coastal Texas. Which Passion flower should I have purchased to replace the vine attractive to Gulf Frillary Butterflies i lost? Susan
Passiflora lutea, Passiflora incarnata, and Passiflora foetida and others are all attractive to Gulf Fritillary butterflies. Passiflora incarnata is probably the most common in gardens and has large purple flowers. If that's not the one- there are over 200 passion flower species, but the flower colors and appearances can help you find the one you had.
Can I store just the bulbs in a dark place in a paper bag over the winter without any dirt or water.
No, they will not survive. It would be best to put the plants in container, and bring them in to continue growing in a brightly lit window over the winter. Here is more information: https://www.gardeningknowhow.com/ornamental/vines/passion-flower/passion-flower-winter-care.htm
I have passion fruit vine, grows well, but its in ground level and running to the fence. I made a mesh 1.5 m above the ground level, re-routed all vine branches to the mesh removing it from fence and grounde level. after couple of months I noticed all leaves fallen, and now nearly dried. still not dead, what can I do to get it back to normal
Depending on your climate zone, this can be completely normal as it goes dormant for the winter. Otherwise, breaking the tendrils that it uses to climb can cause this as well. There are many factors that could have contributed to this. If there is any more information that you can offer it would help me to help you better.
Here is an article on their care: https://www.gardeningknowhow.com/ornamental/vines/passion-flower/passion-flower-care.htm
When and how much should I cut back my passion fruit plants to maximize fruiting ? I’m in south of France.
There are, actually, a few different methods for trimming these depending on the age of the plant. Dormancy is always a safe time if you are unsure.
This article will give you detailed information on pruning these: https://www.gardeningknowhow.com/ornamental/vines/passion-flower/cutting-back-passion-vines.htm
Why is the plant dropping fruit that is still green? They are not going purple.
The most common causes for this are: Not enought light, not enough water, or a lack of potassium and phosphorus in the soil. This link will take you to a set of articles that will help: https://www.gardeningknowhow.com/ornamental/vines/passion-flower/
Our very well established Vive seems to be having serious issues! The vine has fruit and lots of new growth but has quickly become wilted in the past week. No yellowing of leaves just wilting and shrivelling of the fruit. We don't water the leaves and have kept a decent amount of compost and mulch on it's feet. It has companion plants of self seeded tomatoes and a healthy chili plant growing in close proximity. Help! We don't want to lose it!
Because you mentioned that you have self-seeding tomatoes near your passion vines I would have suspected a problem with Root Knot Nematodes (something to which passion vines as well as tomatoes are highly susceptible), but, without seeing a photo of the vine, I cannot be sure about that. But you definitely should contact your local Cooperative Extension for assistance in getting a diagnosis. Most cooperative extension services are free (or will help you for a minimal cost if a specimen needs to be sent to their university labs).