Red volcanic lapillus (3-5 mm) is a type of porous rock suitable for growing carnivorous plants that prefer a moist but aerated substrate. Please note that it is not inert; it is suitable for carnivorous plants that like or can tolerate a minimal level of salinity in the soil.
Pumices and lapilli are products of explosive volcanic eruptions, formed by the violent expansion of gases dissolved in magma. The rapid cooling of lava prevents the orderly crystallization of rock, trapping hollow spaces in the structure where gases were present. As the magma rises, the pressure decreases, causing the dissolution of gases and resulting in a significant volumetric increase. This process creates violent eruptions that project the material outward, leading to rapid cooling that inhibits the orderly crystallization of dissolved minerals, leaving behind cavities created by gas exsolution.
Volcanic lapillus is formed from magma with a lower silica content than pumice. The lower viscosity and slower cooling of the lava allow for the escape of some gases, resulting in minerals characterized by larger voids than those found in pumice or commercial expanded clays, although in smaller quantities.
For the cultivation of carnivorous plants, it can be used, for example, for:
-Mixed with Akadama 30% / Lapillus 30% / Perlite 20% / kanuma 20% for the cultivation of Nepenthes
-Mixed with Peat and Perlite for the cultivation of Drosophyllum
-Mixed with other mineral components (pumice / tuff / kanuma) for cultivation of Pinguicula sp.
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