Sunleaves Rocks, 0.25″ – 0.5″, 25 L

Sunleaves¨ Rocks are a reusable growing medium with serious water-holding power for use in any kind of garden. The 1/4-inch to 1/2-inch rocks are made by superheating shale to temperatures up to 2,000 degrees Fahrenheit, rendering them pH-neutral and chemically inert. Product of the USA.