Espoma SS8 8-Quart Organic Seed Starter For all seedlings and cuttings. Promotes Root Growth. In 8 qt. bags. Espoma Organic Seed Starter is a rich, premium blend of the finest natural ingredients and is specially formulated to grow seedlings and cuttings. Contains:Sphagnum peat moss, peat humus, perlite, and is enhanced with Myco-tone, a blend of mycorrhizae that helps to promote root growth, increase nutrient and water uptake, and grow larger plants with more abundant blooms.