[upthesaukee]

Seasoned wood has had the opportunity for moisture in the wood to dry out, so that the wood burns better, and particularly cleaner. Green wood has a higher moisture content, is not as easy to light, and can cause creosote problems. I'm sure someone has other info on BTU's green vs seasoned...I can tell first hand that my woodstove does not heat up as easily and as hot with green wood as opposed to seasoned.

With all that being said, I buy my wood green in late spring or early summer, have it dumped on my asphalt driveway, and with any kind of luck, the heat of summer almost kiln-dries the wood. Worse thing that can happen is to have a cool rainy summer.