Pumice is a volcanic glass/rock that forms when the hottest parts of volcanic eruption are rapidly cooled by contact with the ocean. This produces a low density, highly porous substrate with excellent capillary action, perfect for aeration of both organic and inorganic mixes. In its crushed form it is of the best amendments to any substrate mix for many plants, especially Pinguicula.
Pumice is a volcanic glass/rock that forms when the hottest parts of volcanic eruption are rapidly cooled by contact with the ocean. This produces a low density, highly porous substrate with excellent capillary action, perfect for aeration of both organic and inorganic mixes. In its crushed form it is of the best amendments to any substrate mix for many plants, especially Pinguicula.
