How to Crush Lava Rock: The Definitive Guide
Crushing Lava Rock. Lava rock forms after a volcanic eruption and can be available in different sizes. When crushed into tiny particles, lava rock acts as a natural fertilizer. The rocks are rich in iron, magnesium, potassium, sodium, phosphorus, sulfur, and other elements. Moreover, lava rock creates fast-draining soil thanks to its porosity.