Jasmine Flower Zone 5. Collectors Nursery in Vancouver Washington reports it is hardy to USDA zone 6 while Lazy S Farm in Virginia says it survives their USDA zone 5 climates. Varieties of Hardy Jasmine for Zone 7.
In addition to true jasmine you can also try a few other jasmine vines for zone. 15042021 Two jasmine species grow in USDA zones 8 to 10. If you decide to try growing jasmine in zone 5 the plants will require plenty of winter protection.
Cold hardy jasmine such as winter jasmine Jasminum nudiflorum may tolerate USDA plant hardiness zone 6 with plenty of winter protection.
They were planted in a protected area on a chain link fence. -18 C certainly wont make it through a tough zone 5 winter without adequate cover to protect the roots. If you decide to try growing jasmine in zone 5 the plants will require plenty of winter protection. Maybe not late enough to be green.