I would highly recommend any variety of catmint. They come in many heights, are rabbit resistant, and have lovely blue flowers. Or, you could try lamb's ears. The fuzzy gray leaves are not something rabbits like to dine on. I would also do an Advanced Search in our Plant Encyclopedia. You can plug in your zone and your specfic requirements and get a list of plants that fit your garden's needs. You can also protect garden plants with Liquid Fence for Rabbits. It works very well and needs only to be applied once a month. You can buy Liquid Fence at most garden centers.