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Perlite is a naturally occurring volcanic glass that is expanded through a heating process to create lightweight, porous granules. This unique structure allows perlite to retain moisture while providing excellent aeration to the soil. It is commonly used as a soil conditioner to improve drainage and aeration in potting mixes and garden soils.
| Material | Expanded volcanic glass |
| Particle size | 1mm to 5mm |
| pH level | Neutral, typically around 7 |
| Bulk density | 0.1 to 0.3 g/cm³ |
| Moisture retention | Holds up to 4 times its weight in water |
When choosing perlite, consider the particle size that best suits your application, as finer grades may be preferable for seed starting while coarser grades are better for improving drainage. Additionally, inquire about the moisture retention capabilities and ensure that the product is free from contaminants. Specify the quantity needed, as perlite is often sold in bulk or bags.
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Perlite is used to improve soil aeration and drainage in various planting applications.
Perlite is a natural mineral, but it is not classified as organic.
Yes, perlite can be reused after cleaning, but its effectiveness may diminish over time.
Perlite is neutral and typically does not affect soil pH significantly.
Yes, perlite is safe for plants and does not release harmful substances.
Perlite is primarily for aeration, while vermiculite retains more moisture and nutrients.