I have two flower beds in the backyard where the girls free range. I'm wondering what I can plant there that they won't find appetizing. We're in far SE Texas, so I've been considering drought-tolerant ornamentals like red yucca, some types of cactus, and the like, but DH works at a garden center and they're clearing out roses. Will the girls tear them up? Also, while on the topic, is there anything I shouldn't plant? I know lantana is poisonous to almost all animals. Anything else?