ICL Sierraform GT 14-0-7 Fertiliser 20 kg


  • Compound granule formulation for even coverage.
  • Added Ca and Mg and TE for when these nutrients are required.
  • Methylene urea formulation for sustained Nitrogen release.
  • Contains SeaMax to provide extra rooting and turf stress management.
  • Great granulation for low application rates.
SKU: 191264
Sale price£42.30 ex. VAT
£50.76 inc. VAT
(minimum of 1)


ICL Sierraform GT CalMag 14-0-7 +8%CaO +5%MgO +TE

Sierraform GT CalMag is a zero phosphate mini-granular fertiliser supplying Ca and Mg and trace elements for turf growth and all-round plant health. The nitrogen is mostly methylene urea-based for sustained release and steady even growth. The Sierraform GT range is renowned for improving turf root growth. Sierraform GT CalMag contains calcium; to strengthen cell walls and improve resilience to stresses including drought; and magnesium; to improve photosynthesis and turf colour.

Sierraform GT CalMag is perfect for fine-turf application through the summer, supplying Ca, Mg, and trace elements particularly where these are indicated as required from soil testing. The excellent granulation means that low application rates can be used, and the methylene urea-based nitrogen source ensures a strong and sustained turf growth response. The addition of SeaMax to the formulation benefits plant rooting and stress tolerance.


Apply to dry foliage, water in if no rain falls within 1-2 days after application. Irrigation or rainfall will assist dispersion and minimize risk of mower pick-up on close cut surfaces. Watering-in after application will minimize the chance of any foot-printing.>

Avoid applications during frosty or drought conditions.

Delay cutting or grooming for 2 days after application to allow granules to disperse.

Product contains iron so if spilt on pavement, concrete or decorative surfaces brush off immediately as there is risk of staining.

Application Window
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Type Cone setting Spreader width Application method Application rate 15 g/m2 Application rate 30 g/m2
Rotary spreader SR2000 or Accupro2000 5 3.5 m 1x pass H J
5 3.5 m 2x pass F1/2 H


Ingredient Oxide Value Elemental Value
Total Nitrogen (N) 14.00% 14.00%
    Ammoniacal Nitrogen (NH4) 1.30 1.30%
    Urea Nitrogen (CO(NH2)2) 2.90% 2.90%
    Methylene Urea (N) 9.80 9.80%
Phosphorus Pentoxide (P2O5) 0.00% 0.00% P
Potassium Oxide (K2O) soluble in water 7.00% 5.80% K
    Magnesium Oxide (MgO) 5.00% 3.00% Mg
    Calcium Oxide (CaO) 8.00% 5.70% Ca
    Iron (Fe) 0.50% 0.50% Fe
    Manganese (Mn) 0.10% 0.10% Mn
    Copper (Cu) 0.02% 0.02% Cu
    Molybdenum (Mo) 0.001% 0.001% Mo
    Zinc (Zn) 0.02% 0.02% Zn

For further information on ICL Sierraform GT 14-0-7, please contact a member of our technical sales team on 01902 440280.

Delivery and Returns

Delivery charge (if applicable) applied at checkout. Next working day delivery is available on some products, as an option on orders placed before 1pm - excludes festive season & bank holidays. Please note deliveries to Highlands, Cornwall and more remote areas may take longer. Surcharges apply for non mainland locations, call for more information - More delivery information.

For large orders, please be aware that if you require a smaller 7.5 tonne lorry, the maximum weight for pallets is 750 kg - otherwise the standard pallet size limit of 1000 kg applies.

If you have any access restrictions for lorries or large vehicles please speak to our sales team on +44 (0)1902 440250.

Collection from our Telford, Shropshire, Trade Counter is available for this product - More collections information.

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