There are some great gardening books available on the internet for free. The following is a list of some special ones that are worth reading or using as a reference. These are pdfs and not e-books. Enjoy.
Free Gardening Books
Enjoy these free gardening books.
24 1/2 Garden Design Ideas
A free ebook that show you how to critique gardens and steal ideas.
This is a great discussion about how plants absorb nutrients into roots. It is a bit technical, but if you understand salts and ions it is a fairly easy read. It is not a book – just a great web page reference.
This is the USDA FS Agriculture Handbook 727, a handbook on seeds of trees and shrubs. It seems like a great resource except that each chapter and section is a separate pdf – so you need to download in sections.