In so much as you are from Cincinnati, I doubt you need irrigation if your soil is healthy and you mulch. Biochar can help if your soil is low in carbon. It is a quick "jump start" for depleted soils low in carbon. If your soil is already good, then I doubt it will help much though.
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Scott
AKA The Redbaron
"Permaculture is a philosophy of working with, rather than against nature; of protracted & thoughtful observation rather than protracted & thoughtless labour; & of looking at plants & animals in all their functions, rather than treating any area as a single-product system."
Bill Mollison
co-founder of permaculture
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