I did the same thing with a goat pen, back in the day. The goats LOVED my rose bushes, and DH would frequently go out and denude the bushes, just to feed the goats a treat. Which was fine, BUT!!! So, I bought a bunch of roses bushes and planted them outside the fence line for the goat pen. As the roses grew larger, they grew through the mesh fencing, and the goats promptly ate them back to the fence line. Funny enough, that side of each bush was MUCH fuller than the 'out' side of the bushes, all that goat trimming didn't harm them at all. And the bushes were much prettier than the ugly old fencing.