Pure 3/8” crushed desert rock.
Topsoil cover now available in the shop. Quarried from far, far southeast Arizona- dug, hauled and packed by yours truly.
Used as both a natural, pH neutral topsoil filter as well as a plant stabilizer this stuff pairs perfectly with natural terracotta and is the exact stuff we use on all plants that come through the shop. It helps prevent base rot and, of course, looks pretty good.