Pumice is solidified foam that forms from lava rich in gases. It has numerous pores in the form of bubbles and irregular cavities that absorb moisture. This lightweight stone is used to amend garden soil improving aeration and drainage while maintaining moisture levels.
Our pumice is horticulture grade, pH neutral, and well screened 1/4 to 3/8” containing little to no fines. It is primarily used for its ability to amend and improve garden soil by providing improved aeration and moisture retention. This product is mined and screened from New Mexico.
Pumice is solidified foam that forms from lava rich in gases. It has an intricate network of cavities that creates structure that is 70% porous and absorbs moisture well. The porous structure of pumice gives it some unique qualities making it useful for gardening. It has a low bulk density and is neutrally buoyant meaning it won’t sink to the bottom of the soil or float to the top. Horticultural grade lightweight Pumice is inorganic so it has no odor and won’t break down, decompose, shrink, compact, or rot. Added to garden soil, it will improve the soil making it more porous and improving aeration and drainage while maintaining a reduced soil weight.
Pumice is available to our customers in smaller quantities by mail through our store.