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Bentonite soil-improver consists of calcium bentonite clay, with no chemical or other additives. Bentonite clay is a very effective soil-improver for ornamental gardens, vegetable gardens, lawns and native plants.

Bentonite Clay - 20kg

  • New garden beds for vegetables, flowers, lawns, and native plants. •3-5kg  per square metre (unimproved sandy soils will benefit from higher application rates) Add a high quality matured compost as well (5-10kg per square metre) Spread clay and compost onto surface of soil and mix into top 15-25cm manually or using a rotary hoe.

    Established gardens, trees, and lawns. •1-2kg  per square metre: apply 500g per square metre, 2-4 times over several weeks. Add a high quality matured compost, 2-5kg per square metre. 

    Establishing new vegetable  and flower beds, lawns, pot plants and soil mixes:
    •Spread dry bentonite granules across  the soil surface, apply compost or manure as desired. Work the bentonite and compost to the root zone to a depth 25cm.

    Establishing a native plant garden: •Spread dry bentonite granules across  the soil surface. Work the  bentonite and compost through the soil to a depth 25cm.surface. Apply mulch.

    Existing gardens and flower beds: Apply dry bentonite to soil surface and work in well either manually, or by watering in well if there is risk of damage to existing plant roots. Add manures composts and fertiliser as required.

    Existing pot plants, shrubs and trees: To avoid disturbing roots, add 4 standard cups of clay to a 10 litre watering can (stir well) and apply to the soil. Regular applications,rather than heavy single treatments, allow the clay to gradually incorporate into the soil.

    Existing lawns: Spread dry bentonite over the lawn and water in thoroughly. Regular light applications, rather than heavy single treatments, allow the clay to incorporate into the soil.


  • Bentonite clay granules are very stable, however keep granules dry to ease handling and distribution. Use dust-mask when spreading  to avoid inhalation of fine dusts. Spilt clay can be slippery and a hazard when wet.

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