Home of the finest worm castings, rock dust, and biochar!
Master Organic Soil Solutions prides itself in offering the finest soil supplements on earth. Our worm castings contain no filler or peat moss. What you get is the real thing. Our rock dust is sourced from a quarry in the Appalachian Mountains and will rejuvenate your soil with key trace elements. Our biochar is sustainably produced using pine waste from local saw mills. The greener you grow, the greener the bud!