Bill, last year we had a discussion about bio-char at my "Power and Energy" cubit (now pretty much inactive). Carol (Aloha Hoya - and her Wizard) know about the advantages to adding this to garden soils. Also, Lyle (in daylily discussion here at ATP) has up close and personal experience with adding bio-char to his soil with huge success.
http://cubits.org/EnergyAndPow...
