Posted: 06/04/2012 at 16:06
Well you have a job on there! Suggest you move the hedge in the winter! Dig down both sides of the hedge now to form a gully maybe three / four inches wide, about foot or two away form the hedge cut through the roots and infill with sand and grit. The plan being that the roots will become fibrous this summer ready to be moved in the winter. Even better would be very early Spring, March time. It is possible to shift hedges with this sort of prep. In Holland the tree nurseries move their trees every few years to keep the fibrous roots growing and that's how they can then sell fully grown trees to be planted in towns. Cut off the top growth this year or better weave it in, yes the trees/ hedges have the potential to get very big but weaving and shaping will keep it down.
bamboo grows very fast and you wouldn't need many plants, depending on the variety it can also be very invasive so take care!