PRO-MIX Perlite is a lightweight, odorless aggregate with a neutral pH. Its physical structure improves aeration and drainage of your soil to benefit plant’s root system.
Perlite is a porous pumice-like material that looks like white granules. Sometimes perlite is mistaken for tiny plastic foam balls when used in potting soil mixtures. It is actually an amorphous volcanic rock that is rich in silicon. When prepared to be used as a potting medium or soil additive, perlite is crushed and also heated to expand the particles. The microscopic bubbles in perlite granules absorb and hold water as well, but they also hold air.
Perlite is a good additive to use when rooting cuttings. Cuttings tend to rot more easily in soil where there is too much water retention (such as would be the case with vermiculite). For plants that need a quickly draining soil, a soil that does not retain much moisture, a soil that is extremely well aerated, and a soil that could have a higher pH, perlite would be the best additive.
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