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Horticultural Vermiculite

Vermiculite has established itself as a firm favourite amongst many discerning growers who appreciate the improvements it gives to their compost formulation. They read about its features - sterile, extremely lightweight, high exchange capacity, but now appreciate those benefits in the quality of the plants they produce. It improves seed germination, stimulates vigorous growth, discourages damping off, and reduces pricking out losses. All of these lead to increased yield and quality and therefore more profit.

GradeNominal Size (mm) Typical Density (kg/m3)Uses
Fine0.5 - 3100Seed growing and moistening growing media.
Medium2 - 885General purpose growing media.
Large (Micafil)3 - 1570Extra winter drainage, bulb culture and storage.

Horticulture


Downloads
Download PDF file Guide to using Micafil Vermiculite in the Garden (0.5 MB)

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More Air Filled Pore Spare (A.F.P.)

AFP provides a measure of the room available within a compost for the essentials of growth - air, water, nutrients and roots. Tests indicate that an AFP figure between 10-15% is suitable for growing media.

More Water Carrying Capacity

It is essential that composts have the ability to hold water ready for plant use. The unique properties of Vermiculite ensure an excellent water holding ability.

More Nutrients

There are several useful elements in Vermiculite potentially available for plant growth. These involve replacing water in the usual solubility tests with an extractant more closely modelling conditions found in compost.

Recommended Mixes

"Seed Sowing" and "Premier Potting" have been formulated to give optimum results. The "Economy Universal" is for those growers who require a reliable mixture but with the emphasis on economy.

Seed Sowing, Cutting and Module Compost 50% v/v Vermiculite, 50% Sphagnum Peat - then to each m3 add the following: 1000g Simple Superphosphate Powder, 500g Sulphate of Ammonia Crystal, 350g Fritted Trace Element WM255, 1200g Magnesium Limestone Powder.
Premier Potting Compost 25% v/v Vermiculite, 75% Sphagnum Peat - then to each m3 add the following: 2750g Simple Superphosphate Powder, 800g Nitrate of Potash Crystal, 1000g Sulphate of Ammonia Crystal, 350g Fritted Trace Element WM255, 4500g Magnesium Limestone Powder
Economy Universal 10% v/v Vermiculite, 90% Sphagnum Peat - then to each m3 add the following: 1500g Simple Superphosphate Powder, 750g Nitrate of Potash Crystal, 500g Sulphate of Ammonia Crystal, 350g Fritted Trace Element WM255, 3800g Magnesium Limestone Powder

The above product information is given in good faith as accurate and reliable but is not to be taken as a guarantee. The figures provided are intended to be a guide to expected average values and should not be interpreted as a specification. Any potential applications referred to are not to be construed as recommendations. It is the responsibility of the user to determine suitability for any specific purpose.