I have used MG soil in the past and to be honest I had poor results. Just buy plain topsoil, or Fox farms Ocean Forest soil, happy sunshine mix #1., Frog mix, or you could buy all the basic building blocks and put em all together to make yer own. Sand, vermiculite, worm castings, perlite, peat moss, blood meal, bone meal, bat guano, crushed sea shell and compost and throw in some cow manure while your at it.