I started using "Mel's Mix" (
http://www.mysquarefootgarden....) last fall. I have lettuce, spinach, onions, cabbage and Brussel sprouts growing in it in two cold frames right now, and they seem to be doing very well. Mel's Mix is 1/3 peat moss, 1/3 vermiculite and 1/3 compost (from as many sources as you can get your hands on.)
For my seeds this year, I am going to make my own mix from a Penn State Extension article I read during the winter.
2 gallons peat moss
2 gallons vermiculite
4 TBSP dolomite lime
2 tsp slow release organic fertilizer
to this I am adding Organic Mycorrhizal Fungi (15 species) Endo & Ecto Mycorrhizae Inoculant Powder Concentrate (
https://www.amazon.com/dp/B077CS6B18/)
