ah nice, I had been searching around for what people use for potting mixes, and I know a lot of them are just in the Glogs, but it's hard to find them sometimes, especially since it is usually just, "here is my potting mix, a little this a little that."
but anyways, so far I use for my 1 gallon containers (in the party cups I use more Perlite to let the roots get really big) but I use about 2 parts Perlite, 1 part Vermiculite (just using the rest of what I have now since it is fine and now coarse, but can do without this, just add more perlite if needed), 2 parts MG potting soil (or any potting soil really, MG is the only kind I could get my hands on so early in the.. well not really season yet, but in mid winter lol) and 1 part really heavy and dark potting soil, I had some EarthGro around, but that is all gone, so I used more MG potting soil.. then some bone meal and blood meal and some sulfur to correct for pH.. I think that about it.. works pretty good so far, but I have been trying to find a better mix that is more consistent, more perlite seems to work better than less
what I am going to use for the 60 plants I will be potting up sometime this week will hopefully be along the lines of (I need 6 cubic feet of soil so I am just doing it per cubic foot and I will change anything I need once I see how it looks after I mix it, and will change/add anything I did once I do it to this thread) but about ~2 cubic feet of pine bark, ~2 cubic feet of organic or regular Garden soil mix (I have the MG stuff around here but will look for something that is similar but a little better.. basically something with manure and compost in there) then about 2 cubic feet of Perlite and 2 cubic feet of the soil.. I am going to have to save some money and use the soil that is in the garden now, I am just going to make a siv and filter any medium/large partials out of the soil before mixing into everything else..
with the 2nd mix I am hoping to get microbes to be able to break down the bone meal, and I just need a way to get enough soil without spending a lot of money for all the plants.. if I could, I would buy topsoil instead of using the garden soil, but oh well..