There's some good basic information in here, but the organization of the book makes it hard to find. If I want to look up soil pH, for example, there's an entry on pH on page 470 under the P's, and another entry on soil on page 541 under the S's. I rarely know where to look, and waste a lot of time guessing.
This book is also short on details if you need to know about a specific disease or insect pest. And, though it gives roughly half a page of information about common plants, including "Planting", "growing guidelines," "problems" and "harvesting," it often skips the important details on starting seeds. For instance, it might tell you to sow the seeds indoors 4 weeks before frost, but it tells you nothing about how deep to plant the seed or what germination temperatures they like.
This book would be good for a beginng gardener who doesn't know what to look for in a good gardening book. (That sentence is not necessarily meant to sound negative.)
Having taken most of it's title from the original book (1959, then reprinted/updated again in 1978) this book really dilutes the volumes of information that was originally available and chooses to offer picture after picture instead. If you want a "picture book" though, this one is for you.
Although there is definitely a bit of knowledge within this book you'd get much more for your money if you purchased the original, or the '78 revised edition.