I thought at first you must live in the scottish borders! We have probs. with hares and rabbits - took advise and surrounded plants affected with wooden scewer sticks (50p a packet from supermarkets) this worked for a while until they worked out they could just pull them out of the ground. The only other way i have found is on precious plants i use the expanding willow trellis around the plant - they haven't as yet worked out how to pull this out!
The only plus , at least around here once the grass starts growing properly they don't bother coming into the gardens!