Suståne Concentrated Compost 2-6-3 All Natural Organic Soil Builder is the latest addition to Suståne Natural Fertilizer’s professional-grade, organic offerings for the home gardener. A natural soil conditioner and organic plant food in one, it replenishes soil with a rich supply of stabilized organic matter, microbiology, and essential nutrients required for quality plant growth. Suståne Concentrated Compost is approved for organic growers and can be used to enhance garden soils, potting mixes, raised bed media, and to rebuild damaged or depleted soils.