Waugh David Waugh & Waugh Robert Waugh 
Zone 5 

Dr. Bob’s somewhat specific and technical title of this book should reveal that it is written for the gardener with a greater than average interest in collecting and arranging plants. It is for the avid and dedicated gardener with a lifelong interest in plants, and not for one who merely wants to put something new along the front of the house. The latter interest can be met just as well by a single trip to the nursery and following the advice of the salesperson. The book is meant for those with a global interest in understanding landscaping. It is for those who want something unique and different, but still compatible with the neighbors. Hopefully it can be read for enjoyment as well as for learning.