Pumice (filtered 3/8" to 1/4" in size) is relatively lightweight volcanic rock used as an amendment in all types of soil. 

Its porous composition allows it to retain moisture and nutrients during watering, and release them slowly over time as the root system requires. 

Think of these components as little batteries for your plants!

Sol Soils partners with Switch2Zero to plant a tree for every bag sold to support reforestation projects.