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What Is Vermiculite?
Vermiculite is a naturally occurring mineral that expands into light, sponge-like granules when heated. This exfoliated form is prized in gardening for its ability to retain moisture, improve soil aeration, and enhance nutrient availability, making it an essential soil amendment for both indoor and outdoor plant care.
Whether you're potting up houseplants, starting seeds, or conditioning heavy clay soil, vermiculite helps you achieve optimal root health and sustained moisture without waterlogging your plants.
Why Use Vermiculite in Your Garden or Greenhouse?
Improves Moisture Retention – Holds several times its weight in water, reducing the need for frequent watering.
Boosts Soil Aeration – Prevents soil compaction and keeps roots oxygenated.
Enhances Nutrient Uptake – Absorbs and releases nutrients back to the plant over time
Perfect for Seed Starting – Sterile, lightweight medium ideal for germinating seeds and propagating cuttings
Reduces Soil Compaction – Especially effective in clay-heavy or dense soils
Long-Lasting & Non-Toxic – Won’t degrade over time and is free of harmful contaminants.
How Much Vermiculite Should You Use?
For Potting Mixes: Blend in 10–20% vermiculite by volume with compost or soil.
Seed Starting: Use 100% vermiculite or mix 50/50 with peat moss for a sterile, breathable base.
Garden Beds/Raised Beds: Mix 1/3 to 1/2 vermiculite with compost and topsoil.
New Lawns: Spread a ¼ inch layer over newly seeded areas and water thoroughly.
Bulb Storage: Layer dry bulbs or root crops with vermiculite in a box and store in a cool, dark place.
Great For:
Houseplants
Seedlings & propagation
Raised beds & container gardens
Moisture-sensitive plants like ferns or peace lilies
Root vegetable storage (carrots, onions, bulbs, etc.)
Worm composting (adds grit to aid digestion)
Product Details
Bag Size: 18kgs
Type: Horticultural Grade, Exfoliated Vermiculite
Texture: Medium granules (ideal balance for water retention + drainage)
Sterile & Non-Toxic: Safe for organic gardening and seed starting
Made for Gardeners – Trusted by home growers, landscapers, and nurseries
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