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Horticultural Grade: Very porous for holding air. Approximately 50% will float and 50% will sink which is ideal for soil building. Some pumice mines are also full of obsidian which is what perlite is made from and 100% will sink and not add the same air holding properties. When making potting soil, insist on horticultural grade.
Last Longer Than Perlite & Has More Minerals!
THIS PRODUCT IS AVAILABLE FOR IN-STORE PICKUP ONLY
Horticultural Grade: Very porous for holding air. Approximately 50% will float and 50% will sink which is ideal for soil building. Some pumice mines are also full of obsidian which is what perlite is made from and 100% will sink and not add the same air holding properties. When making potting soil, insist on horticultural grade.
Last Longer Than Perlite & Has More Minerals!
THIS PRODUCT IS AVAILABLE FOR IN-STORE PICKUP ONLY