Acidic Planting Mix Indoor / Outdoor - 8 Dry Quarts - FREE SHIPPING! Excellent Soil for Acid Loving and Shade Plants. Perfect for all of your indoor and outdoor gardening needs. Acidic Planting Mix is an ideal planting medium for use in containers, planters, hanging baskets, and garden bedson patios, balconies, decks, and in windowsills. Developed and tested for optimal growth of plants requiring a lower pH planting medium. Ingredients: Sphagnum Peat Moss 25% - 35%, Bark Fines, Pumice, Compost Recommended for: Alyssums, Pansies and Violas, Nasturtiums, Roses, and Snapdragons.