Absolutely the best perennial gardening book I've found. Very up to date. Gives all pertinent info - 175 pages. Beautifully illustrated. Covers plants for Zones 2 - 7. Available for $15.95 from perennials.com My favorite garden center has laminated its pages and it's on display as THE reference text. I've given at least 6 copies as gifts to gardening friends. Highly recommended.