This volume is the perfect companion to Dirr's other magnificent books, "Manual of Woody Landscape Plants" and "Dirr's Hardy Trees and Shrubs." These books aren't cheap so if you really, really have to pick just one, buy the "Manual" for its comprehensive, even exhaustive, coverage. But then do whatever you can to scrape together enough money to buy the other two volumes! They provide less information than the "Manual", but are worth their price for the color illustrations alone. Both are handsomely produced books, the kind for which Timber Press is becoming well-known. One particular asset of this book with respect to the others is its treatment of palms and several genera and species that were given short shrift, or not mentioned at all, in Dirr's "Manual". Throughout the book, Dirr's opinionated good nature and conversational writing style makes it a pleasure to read.
A previous reviewer bemoaned the fact that well-known southern plants are missing from this volume. In fact, it is a valuable reference precisely because there is virtually no overlap with "Dirr's Hardy Trees and Shrubs." Already owning the previous volume, I was very pleased to find that the new book complements it perfectly; plants that were previously discussed are not repeated. Sure, you have to buy both books, but have I already mentioned that it's worth it?
Although I am sure I will find more as I read the book more carefully, the only error I have found so far is the misspelling "Rhapidiophyllum" for "Rhapidophyllum".