Rabbits prefer tender young shoots and seedlings. If you can protect these with chicken wire until the plants are past that stage, bunnies are often less interested. Fencing works, too, of course. But be sure to bury the bottom several inches in the ground so they can't burrow under it. Dried blood is an effective deterrent, especially around seedlings.
Products containing dried blood are available at garden centers.
The only downside to dried blood is that it must be replenished after heavy rains. Q. My arborvitaes turned brown on the inside this summer and seemed to lose quite a bit of foliage. A. Loss of interior foliage is normal for evergreens, as they shed older needles and put on new growth at the tips. A. Plant bulbs until the ground freezes hard and you can't dig anymore. If they're not planted, the bulbs will die.