Premium Horticultural Perlite 100L Bag

Lightweight, sterile, and perfect for improving aeration and drainage in any growing setup. Our Premium Horticultural Perlite is a naturally occurring volcanic mineral that has been super-heated to create a highly porous, lightweight medium.

Perlite is one of the most popular soil amendments and hydroponic media used by professional growers and home gardeners alike. It keeps plant roots healthy by preventing waterlogging and ensuring optimal airflow, while also helping to anchor plants securely.

What is Perlite?

Perlite is formed when volcanic glass is heated to around 900°C, causing it to expand up to 20 times its original size. The result is a white, lightweight, porous particle that is pH neutral, sterile, and extremely durable.

Its unique structure means perlite can hold water in its tiny surface cavities while allowing excess water to drain away quickly the perfect balance for healthy root development.

Key Benefits of Horticultural Perlite

1. Improves Drainage

Prevents soil compaction and waterlogging by creating free-draining spaces in the growing medium.

2. Enhances Aeration

Keeps oxygen flowing to plant roots, reducing the risk of root rot and other diseases.

3. Lightweight & Easy to Handle

Ideal for rooftop gardens, container gardening, and potted plants.

4. Sterile & pH Neutral

Free from pests, diseases, and weed seeds, with a neutral pH that wont affect nutrient uptake.

5. Long-Lasting

Does not decompose over time, meaning it can be reused after cleaning.

6. Versatile Applications

Works for seed starting, potting mixes, hydroponics, and propagation.

Common Uses for Perlite

• Seed Germination: Mix with [Vermiculite] or [Coco Peat] for fast, even sprouting.

• Potting Mix Improvement: Add to soil to improve drainage and aeration for container plants.

• Hydroponics: Use as a stand-alone medium or blend with coco peat for moisture control.

• Propagation: Root cuttings in perlite for rapid root growth and minimal transplant shock.

• Soil Lightening: Improves the workability of heavy clay soils.

How to Use Perlite

For Potting Mixes:

• Mix 2040% perlite into your chosen soil or coco peat blend to improve drainage and aeration.

For Seed Starting:

• Combine equal parts perlite and vermiculite for a sterile, lightweight germination mix.

For Hydroponics:

• Use perlite in net pots or grow bags as a standalone medium, or mix with coco for a balance of drainage and moisture retention.

Technical Specifications

• Material: Expanded volcanic glass

• Bag Volume: 15 litres

• Colour: White granules

• pH: Neutral (6.57.5)

• Weight: Lightweight approx. 0.10.15kg per litre

• Lifespan: Long-term use; can be reused after cleaning

Best Practices & Tips

• Always wear a dust mask when handling dry perlite to avoid inhaling fine particles.

• Moisten perlite slightly before mixing to reduce airborne dust.

• For reusable applications, rinse and sterilise before replanting.

Why Buy Our Perlite?

• Horticultural Grade: Clean, consistent particle size for professional results.

• Convenient Packaging: 15L bag easy to carry and store.

• Versatile: Works for seed germination, hydroponics, propagation, and potting mixes.

• Trusted Supplier: SA Horticultural Supplies provides only quality substrates for growers.

Order Your Perlite Today

Give your plants the perfect balance of drainage and aeration with premium horticultural Perlite. Whether you're mixing your own potting blend, rooting cuttings, or running a hydroponic system, perlite is a must-have growing medium for healthy, vigorous plants.

Available now in 100L bags delivered anywhere in South Africa.