This is my all time favorite garden book. It is a reference book for people interested in propagating plants from compatible climates, a photo reference to mature plants and, since there are many photos of gardens within, a visual inspiration. It is not a beginners how to, but contains an enormous amount of useful information if the reader is at all experienced. The writers don't discuss temperature hardiness based on the Zone system, but in minimum temps. centigrade, and since they are British they don't pretend much knowledge of cold climates; the reader needs to think about their own climate in relation to other world climates in order to get the most from this book. The book is packed with excellent photos, and the information on growing preferences, moisture, origins in the wild is invaluable. Based on this, I've tried successfully many plants not supposed to grow here. It is the first book I grab when thinking about a plant, and as I mention above, I've loved it to death. I highly recommend for plant collectors, and experienced or ambitious gardeners.