VITAL EARTH'S PUMICE STONE
Vital Earth’s Pumice Stone is a type of extrusive volcanic rock, produced when lava with a very high content of water and gases (together these are called volatiles) is extruded (or thrown out of) a volcano. As the gas bubbles escape from the lava, it becomes frothy. When this lava cools and hardens, the result is a very light rock material filled with tiny bubbles of gas.
AMENDMENT RATE: 1 measure of Vital Earth’s Pumice Stone to 10 measures of Vital Earth’s Potting Soil for extra aeration.
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