Perlite – Volcanic Glass for Root Aeration
Lightweight Soil Amendment to Boost Drainage and Oxygenation
Perlite is a white, lightweight material created from rapidly heated volcanic glass. Its primary purpose in gardening is to improve the physical structure of soil by creating air pockets, which prevents compaction and ensures the plant roots receive a constant, sufficient supply of oxygen. This dramatically improves drainage, protects roots from rot, and maximizes nutrient uptake efficiency.
Key Benefits
- Prevents soil compaction, ensuring long-term soil structure integrity.
- Enhances drainage instantly, preventing waterlogged conditions.
- Inert, sterile, and pH-neutral, making it safe for all nutrient types.
- Ideal for blending into heavy soils, coco coir, or use in hydroponic systems.
Composition & Specs
- Material: Expanded volcanic glass (silicon dioxide).
- Function: Aeration and drainage agent.
- Density: Extremely lightweight and porous.
Usage Tips
- Mix into potting soil or coco coir at a ratio of 10% to 50% for improved drainage.
- Wear a mask when handling dry Perlite dust to avoid inhalation.
- Can be used as a sterile medium for rooting cuttings.
Perlite is an indispensable component for creating high-performance, well-aerated growing media.

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