Gallery of Salvias
A Gallery of Salvias Web site is one of the best collections of salvia images and helpful descriptions, including comments regarding the suitability of various salvias to different parts of the country and growing environments. A great place to find the next salvia you just can't live without. And buy them, too!
The New Book of Salvias: Sages for Every Garden, by Betsy Clebsch (Timber Press, 2003; $29.95), is the second edition of the previous A Book of Salvias. Clebsch provides excellent descriptions and commentary in over 300 pages, covering approximately 150 species of this extensive genus from around the world. No salvia fan can do without this wonderful book.