Pumice is solidified foam that forms from lava rich in gases and has cavities that create a structure that’s 70% porous and moisture absorbent. These fantastic properties make it very useful in gardening and particularly cacti growing.
Pumice is light weight and inorganic, long lasting and better for the environment than something like perlite.
3 reviews for Horticultural Pumice 3 – 8mm
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