Basic Potting Soil Recipe: 1 Part Compost; 1 Part Garden Soil; 1 Part Peat Moss; 1/2 Part Vermiculite or Perlite (Use perlite for water retention and drainage. Use vermiculite to increase water and nutrient retention and aerate the soil). Add peat moss and Vermiculite to container. Gently wet it and mix. Add compost and garden soil. Mix. Use as you would any potting mix. Can be scaled up by increased amounts...