Perlite Is A Type Of Volcanic Glass That Is Commonly Used As A Soil Amendment For Plants. It Is Lightweight, Sterile, And Ph Neutral, Making It A Good Choice For Many Types Of Plants. When Added To Soil, Perlite Helps To Improve Drainage And Aeration, Which Can Be Beneficial For Root Development. It Can Also Help To Retain Moisture In The Soil, Making It A Useful Addition For Plants That Prefer A Consistently Moist Environment. Perlite Is Also Often Used As A Rooting Medium For Plant Cuttings, As It Provides Good Drainage And Humidity Retention. It Is Also Non-Toxic To Plants, So It Can Be Safely Used In Indoor And Outdoor Gardening. It Is A Popular Choice For Hydroponic Gardening Because It Doesn'T Compact And Provides Good Drainage, Also It'S Ph Neutral.