Make quality potting soil and soil-less mixes at home. Seedling Mix For Seedlings In Styrofoam Flats 2 parts compost2 part peat moss or coir1 part perlite The second recipe is a soilless recipe based on the Cornell Mix concept; the third is a classic soil-based formula. Organic Substitute for Cornell Mix (large quantity) 1/2 cu. yd. … Continue reading Potting Soil Mix Recipes