There are many types of salvias and they have an almost cultish following. They come in so many variations and are so easy to care for that people just can't get enough of them. They are also pretty deer resistant and many come back every year. Those that don't come back are easy to grow from seed and some of them are ready re-seeders. Add that this the fact that hummingbirds, butterflies, and bees love them and you have a recipe for a favorite flower.