I have surplus casting that I want to use for potting soil. Does anyone have a good formulation for potting soil?
For my indoor winter vegetable garden I have good luck with 1 part sphagnum peat moss 1 part perlite 1 part worm castings. After 6-8 weeks I top dress with more worm castings. this mix Is used on Pock Choi, Romaine Lettuce, Swiss chard, etc. It must be watered every 2-3 days as it drains fast, but grows fast healthy plants for me