VERMICULITE GRADE 4 20L
$20.00 inc. GST
Vermiculite Grade 4 is a lightweight, inorganic mineral ideal for seed starting, mixing with soil, compost, or hydroponic media. Highly absorbent and non-reactive, it improves water retention and aeration. Mix with perlite for optimal Autopot or container growing systems.
Full product description
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Vermiculite Grade 4 – Premium Horticultural Mineral
Vermiculite Grade 4 is a unique, lightweight mineral widely used in gardening, horticulture and hydroponic systems. Scientifically composed of hydrated magnesium aluminium silicate, it is inorganic, highly absorbent, compressible, non-reactive, and incombustible.
This versatile mineral is perfect for:
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Seed covering for optimal germination
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Mixing with compost, soil, or hydroponic media
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Improving water retention and aeration in potting mixes
Ideal Mix Ratios
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50:50 Vermiculite – Perlite: Recommended for Autopot systems to create a balanced, well-draining medium.
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30:70 Vermiculite – Perlite: Produces a more water-retentive mix than perlite alone, reducing watering frequency and supporting steady plant growth.
Key Features
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Lightweight and easy to handle
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Inorganic and non-reactive — safe for all plants
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Highly absorbent to improve soil or hydroponic moisture retention
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Compressible for superior root contact
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Ideal for seeds, cuttings, and mature plants alike
Applications
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Hydroponics and semi-hydroponic systems
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Seed starting and propagation
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Soil or compost amendment
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Autopot and container gardening
Vermiculite Grade 4 is a must-have for growers seeking consistent moisture retention, improved aeration, and healthier root systems.
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