Just got my new Mother Earth News and there was an article about making potting soil. You can read it at http://www.motherearthnews.com/Organic- ... -Soil.aspx
One of the things she recommends to lighten the mix is to add a handful of sand per quart. I have quit adding sand because it seems to make a sort-of concrete out of the mix after numerous waterings, etc.
Several years ago I stopped using homemade compost when starting seeds because of damping off. So I've been "sinning" by using a peat-based mix (but only for starting seeds!). The author of this article advises to pasteurize homemade potting soil by heating to 160 degrees. Will this leave any beneficial life in the soil?
I wonder if any of you compost experts might read this article and comment. Thanks!