https://www.kisorganics.com/blogs/news/basics-to-mixing-your-own-soil
Clackamas Coot's Recipe
1/3 Sphagnum Peat Moss
1/3 Aeration (pumice, perlite, lava rock, etc..)
1/3 Compost + Earthworm Castings
To each 1 c.f. of this mix I add the following:
1/2 cup organic Neem meal
1/2 cup organic...