The Fourth Edition of Gardening Indoors: The Indoor Gardener's Bible has everything you need to know how to grow a bountiful garden indoors. It is very strong on new technology, including hydroponics and high intensity lighting. The section on plant nutrient problems, insects, spider mites and diseases, including fungus, are extremely informative and very complete. The appendix, glossary and index are very complete and easy to use. This book has always been a best seller for us, and with this new edition, the trend continues.