What should I do with an old grape vine?

I have recently moved house and have a mature grape vine in the greenhouse. What should I feed it? When should I prune it? Should I water it?

What should I do with an old grape vine?
Assuming you want it to produce fruit:





You will want to prune them back at the end of the season, as grapes only produce fruit on new growth. You will only need to water it three times throughout the season: at the very beginning of the season, at the time it is done flowering and just starting to grow baby grapes, and at the very end of the growing season.
Reply:Drink it
Reply:Grape vines are pretty easy to grow. Water it if it doesn't rain, you could fertilize it to help it grow fuller, and maybe to also have it produce grapes.
Reply:keep it for future use