Tropical Garden Style with Hardy Plants (ISBN 1861082371)

Thorough book, but geared for the UK:
What wasn't apparent to me when I ordered this book was that the information was written for the British gardener. The hardiness information ("half hardy", "fully hardy", etc.) is useful in the UK, but hardiness in some plants can vary greatly between the two continents. Having said that, the book does have a thorough list of plants and is well organized. It is useful to the American gardener for plant ideas and general inspiration, but hardiness will have to be checked independently.