"I have made my own mix before with peat, perlite, vermiculite, compost and soil but I need huge amounts this year and I'm dealing with clay soil so it is a lot harder to use".
Don't use your clay soil then; you don't need it.
There is an organic version of the original Cornell Mix. You can easily mix it fairly quick, too, since the ingredients are much lighter than your clay:
1/2 cubic yard sphagnum peat
!/2 cubic yard vermiculite
10 pounds bone meal
5 pounds ground limestone
5 pounds blood meal
I'm not sure what size pots or type of plants you are growing but I'd use this recipe for things that will only be in a pot a short while since peat tends to compact fairly quickly.
If you want to reduce the ingredient sizes down to smaller batches 1/2 cubic yard equals 100 dry gallons.
Hope this helps.
I'm sure I have a list on my computer for ready-made potting soils that are OMRI approved if that would help.
Shoe
