Akadama (赤玉土 akadamatsuchi, red ball earth) is a naturally occurring, granular clay-like mineral used as soil for bonsai trees and other container-grown plants.
It is surface-mined, immediately sifted and bagged, and supplied in various grades
The deeper-mined grade being somewhat harder and more useful in horticulture than the more shallow-mined grades.
Akadama may also act as one component of the growing medium when combined with other elements such as sand, composted bark, peat, or crushed lava.
 
Note: All 1 litre packs have been sifted before repacking into a clear ziplock bag.