Coconut coir fiber, sphagnum peat moss, perlite, pumice, organic compost, worm castings, wood biochar, diatomaceous earth, natural limestone (for pH adjustment)
Opus ZERO is the ideal organic base soil blend for professional growers. Made primarily with an equal blend of coir and perlite, we add a little extra of our own special ingredients and mycorrhizae for a very special blend that only comes in Opus Grows! Made in-house in Eugene, Oregon, use as a professional style potting soil in patio planters and boxes, and all types of cloth or polycan grower containers. Add your own unique blend of nutrients during each stage of growing.