There is a product you can find at some hardware stores that may work on ridding you of the rabbits. It's the urine of predators, such as bobcats and coyotes, that you put into little bottles and hang them around where your plants are. It may sound disgusting, but I've used it before to get rid of varmints. Good luck.

I bought dog/rabbit repellant (dry form) in Home Depot. I haven't seen rabbits, but it didn't seem to work for dogs. The down side was I had to wear gloves and children should not be playing on that area if it is grassy. Check with the department that handles weed killer, insect control, etc. They should be able to show you the item.