Thanks for writing. There are no plants that are truly rabbit proof, but there are many which are rabbit resistant. In general, plants with strongly scented foliage (most herbs, bee balm, catmint, etc.) are left alone by rabbits, as are plants that have very fuzzy or hairy foliage (lamb's ears), as well as highly poisonous plants (hellebores, monkshoods, angel's trumpet, castor bean, etc.).
---Justin, Senior Garden Editor, BHG.com