Pruning a 25 year old Jasmine officinale severely
My 25 year old jasmine officinale grows against a wall (part of a garage) which my neighbour is knocking down and replacing with a garden studio made of wood. Whilst the new building is being erected I would like the jasmine to survive. How severely can I prune it before the wall is knocked down and is there anything I should be aware of when pruning it.
Once the new structure is up what structure do you recommend that I should use against the new garden studio so that it does not damage the new wall. With many thanks