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 available in 2 sizes. A screened 3/8” containing little to no fines and 1/4″-minus with about 20% 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 at a large pit.
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.
We also sell our 3/8″ Pumice on Amazon Marketplace in a 1/2 cubic foot priority mail large box delivered to you.
Acme Sand & Gravel
7777 E 22nd Street Building 3
Tucson, Arizona 85710-6434
(520) 296-6231
Store hours:
Monday – Friday 7:00 – 4:00
Saturday – 7:00 – 2:00
* Please arrive 10 minutes before closing, to allow for weighing and loading time.
** Because of all the types, sizes and weight of our products, please purchase wisely. If you’re not exactly sure of the specific product you want, bring a sample of your material to compare that colors and sizes match. We do not offer refunds or returns on bulk materials.