This 'brick' of compressed potting mix contains 7 - 4"(10cm) wafers, enough to expand to 2.5 gallons of seed starting or potting mix. Made of coconut coir fibre, with natural fertilizers, worm castings, and water-saving polymers included. Use one wafer at a time or all at once--whatever you need, when you need it. Saves space and avoids the hassle of large, bulky bags!
