2 cuft, organic potting mix, rich, loamy mix is a premium choice for all purpose gardening applications, our 100% organic base consists of screened earthworm castings, Canadian sphagnum peat moss, compost & forest humus, we blend in perlite & pumice to ensure optimum aeration, listed by the organic materials review institute, omri for organic production, now contains resilience sun gro's brand name for patented growing mixes enriched with silicon for stronger stems & improved root mass.