I knew before buying the book that I might be pushing zones to try to add heathers to my garden (zone 4), but I had seen a zone 5 heather in a gardening magazine, so figured it was worth finding out more. The photos on the website sample are luscious--sadly, the e-book version only had black-and-white photos. However, the wealth of information about growing heathers and the history and background of heathers (and heath) is worthwhile, even without the photos--but for only $3 more (or perhaps even less than the price of the e-book), buy the hard copy so you can get the color photos. Bonus--I was excited to find out that the sandy and poor soil in my garden, while ill-suited to growing grass, might be the ideal environment to grow heather. After the disappointment of discovering that the e-book did not have color photos, I took advantage of Amazon's 7-day return policy for e-books, but I will definitely be buying this in hard-cover. You may enjoy this book if you are interested in plants that will be low-maintenance, or are trying to shift to gardening with shrubs, or are a fan of the sweeping/romantic Piet Oudolf-style designs...