Vermiculite vs Perlite: What is the difference? | World ...
Aug 19, 2014· Vermiculite and perlite are both nonorganic soil additives that are used to aerate the soil. As rooting mediums, they offer this same benefit. Vermiculite is a spongy material made from mica whereas perlite is a type of highly porous volcanic glass that resembles pumice. Perlite appears as small, round, nonuniform, white particles.