Shade Potting Mix George Schenk’s recipe for the ideal soil for growing plants in shade. 1 part humus (compost, peat, leaf mold, etc.) 1 part sand 2 parts loamy soil (builder’s or riverside) Listing of potting soils and what they are used for. Articles Grow Delphiniums from Seed Container Gardening Recipes Garden Loam Potting Soil John Innes Potting Compost Orchid Potting Mix Cacti Pottingl Mix Seed Starting Potting mix Alpines Potting Mix Shade Potting Mix Cutting Potting mix A. Knutson Potting mixes CORNELL MIXES Cornell Peat-lite Mix Cornell Foliage Plant Mix Cornell Epiphytic Mix Standard Potting Mix