hacking an old grape vine?

pawera Posts: 2 ✭✭✭

i live in los angeles, have an old grapevine of maybe 20 years that stopped producing grapes.

the plan was to cut it out and plant fruit trees (unless anyone has a secret to make it a prolific producer of grapes again?)

but the real question:

the vine has found a water source, possibly water from the neighbor’s lawn on the other side of the wall. is there a way to keep and utilize the grape vine’s water affinity to water for another plant in that space? Can you maybe graft a different plant onto the grapevine supplying nutrients?

maybe this is just a dumb question but if i can ‘repurpose’ an old grapevine, why not?