I live in Portland, OR, and we have pretty amazing varieties of soils around here that have a high mineral content, and some with high clay, as well. I'm wondering what kind of properties mineralized topsoil has? Is it sandy, or silty, or loamy, before you mix it with the clay? Where does the Miracle Gro Organic come from?
I wish I had an extra tank to experiment with, but I'm a bit too poor at the moment. Has anyone done experiments with their local soil?