This is our BIBLE, the book we use and recommend to everyone who wants to raise monarch butterflies. It is thorough, well organized, easy to understand, and jam packed with excellent photos and illustrations. Each year Natureworks raises hundreds of monarch caterpillars from eggs that we collect from our organic gardens. We then teach our customers how to do the same. I have given this book as a gift many times, especially to kids who I think are ready to get serious about this fascinating hobby.