If your going the fence/hedge route its key with any living fence that the ole trimming of the hedges has to happen to maintain control. In this case the "trimmer" is my 310 Stihl
Make a slurry of the seed balls and water, shallow trench the fence line, pour slurry down trench, lightly cover with soil and wait...end of 1st year begining of 2nd bend tops over and bury in the soil weaving them into each other...tops will root and new shoots will grow up from the now horizontal sapling. Its a labor intensive fence but dog gone effective. Best of luck!