I don't mean to be a shill for this book, exactly, but this book's editions have been indispensible for my garden designing in California, and are quite useful in New Mexico as well. In fact, if I lived in the east coast of the US or in Australia, or, say, England or Spain, I still might like this book a lot, though the maps and the subsequent garden zones wouldn't be applicable.
It's Sunset Western Garden Book. Here's the a2k-amazon link... (There is a deal if one orders now, before the March publishing date.)
Link for Western Garden Book
Well, that's my garden "bible". Do you have a can't be without garden book?