I moved into a new house about 18 months ago. The wisteria in the garden was in flower but since then it has had no flowers or foliage. It is about 45 years old. It looks like it is dead. I cut it back in Feb last year but still not nothing. Hope you can help. Thanks dave
There can be a few different reason for no leaves, though I do think the age of your vine is the most likely reason.
Here are some articles that will help you pinpoint the care needed.