Perlite 101
Perlite is an inert mineral that has been used for many years in agriculture to improve soil structure and moisture retention. It also helps prevent soil erosion by absorbing water and preventing soil particles from clumping together. Here's why perlite is more helpful than you might've thought:
It's an excellent air-entraining agent
Perlite is often added to growing media because it improves aeration and drainage. However, it can also be used as a soil amendment. Since perlite is lightweight, it will not compact your soil.
Moisture Retention
Due to its inert nature, perlite does not absorb water. Because of this, it won’t cause any changes in the pH level of the soil.
Great for Hydroponic plant growth
Perlite is popular among hydroponic growers because it helps retain moisture and nutrients in the soil. It has been found to improve plant growth by increasing root development and improving air circulation. Perlite is also good at absorbing odours and gases.
High Heat Capacity
Perlite's low thermal conductivity means that it does not transfer heat very well. However, it does absorb heat when exposed to direct sunlight.
Tried and Tested
Perlite has been used for centuries as a building material because of its ability to absorb moisture and retain air. In fact, it was used by the Romans to make concrete. Perlite is also known as expanded shale, volcanic glass, and pumice.