My greatest gardening struggle is with the rabbits. If they would eat the lawn like they eat my gardens, we wouldn't need a lawn mower!
I've had luck with the Crow - motion activated, sprays water. That's if I remember to hook it up to the hose after I use the hose for something else, replace the battery, and keep moving it around all the time : )
I put fencing around the gardens at one point, but the gardens are scattered and rabbit fencing gave them a not-so-charming prison look. We have dogs and cats, but to keep them safe they're confined in a fenced yard - no help. I take the dogs out front to chase the rabbits, but they're back a few minutes after we go away.
The darn rabbits eat prickly things (roses, echinops ritro), sticky milky sap things (euphorobias), even outright poisonous things (monkshood, and no, there weren't any less rabbits after they got into that!). They even come up the walkway and climb up stairs to eat things in pots on the front porch.
I haven't found good lists of rabbit proof or rabbit resistant plants on line. If you've struggled with rabbits, please help - tell me what they've left alone for you! My lists follow.
My resolution this year is to just stop planting "Rabbit Candy" - the things that keep getting mowed to the ground - no matter how much I love them. For me, these include dianthus, baptisias, willows, dahlias, echinaceas, hollyhocks, lathryus vernus, violas, euphorbias, echinops, asters. And other stuff that just disappears and I forget about - these are the just ones I've stubbornly planted repeatedly :(
I get moderate rabbit damage in siberian iris, clematis, monkshoods, columbines, heleniums, tall phlox, roses, campanulas. These usually survive - in a stunted, coughing up blood and limping along kind of way.
The few things they haven't (yet) eaten for me include: peonies (herbaceous and tree), hostas, bearded iris, daylilies, catmints, lamb's ears, lady's mantle, coral bells, spring bulbs (daffs, snowdrops, etc), hollies, creeping phlox, alliums, amsonias, abelias. Luckily, there's a lot of great plants in this list.
What DON'T they eat for you? Forget designing for color, foliage, rhythym, etc. At this point I'm just aiming for "plants that are still there when you go outside the next day".