Pumice is a volcanic stone . Use on its own for propagation, as a soil amendment to improve drainage or as a top dressing. Has the ability to retain moisture while allowing air to roots. It generally doesn’’t break down quickly and can be reused multiple times. Used commonly as a substrate of bonsais or cacti.
Natural, unprocessed organic medium.
- Granulometry: 3 to 6 mm
- Imported from Japan