I got access to a downed oak tree a couple years ago and the tree company shredded it and placed it in my drive for me. I commenced to cover my entire garden area with 4-6 inches of wood chips as a weed barrier and to keep from walking in the mud after a rain. People said that it would off set the nitrogen and so on but the red wigglers began working on the white bacteria that quickly formed on the wood chips. It is like candy to them and the worms got huge and robust. As you know, the worms come up to feed on the fungus of decaying matter and take the nutrients down to the roots of your plants and deposit it there with a perfect fertilizer balance. You can add bacteria and trace minerals along with charcoal to hold the nutrients in place. You can even char some of the wood chips so that they will last forever.
Rather than tell you all about it. You can watch a video. You might want to turn off the HD on the lower right of the screen.
"Wood Chip Gardening - NO water needed. http://backtoedenfilm.com/index.html#movie
Also, here is a great plant sourced mineral complex that is based on body weight. You WILL see results. Just try the 90 essential nutrients liquid supplement for 90 days. This is as good as it gets when it comes to supplementation. www.YoungevityOnline.com/Rexella