Maxwell Advanced Iron Universal 4-0-4 +9Fe Mini

Maxwell Advanced Iron Universal 4-0-4 +9Fe Mini

The N, P and K analysis are well balanced for autumn and spring use, whilst the iron helps to provide rapid greening and hardens the turf.

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Maxwell Advanced Iron Universal 4-0-4 +9Fe Mini

Iron Universal is a mini-granular homogenous fertiliser. The N, P and K analysis are well balanced for autumn and spring use, whilst the iron helps to provide rapid greening and hardens the turf.

Iron Universal is an extremely flexible fertiliser that can also be used to complement the other products in the ADVANCED RANGE.


Application Rate & Spreader Information

LongevityGranule SizeCutting HeightBag SizeApplication RateBag Coverage
4 - 6 weeksMini 1.0 - 2.5 mmAll turf especially fine turf20 kg30-35 g/m²571-667

  • Apply evenly, avoid overlapping or missing areas, using a suitable calibrated fertiliser spreader.
  • If there is no rain within 2 days of application irrigate the treated area thoroughly.
  • Do not apply in hot, dry weather or frosty conditions.
  • Should not be applied to wood, stone or any hard standing areas as staining may occur.
SpreaderApplication RateSingle PassDouble PassSpread Width
Accupro (cone 8)30g/m²NJ 1/23.3m
Flex Select30g/m²17.512.54m


Product Analysis

IngredientOxide ValueElemental Value
Total Nitrogen (N) 4.00%
    Ammoniacal Nitrogen (NH4) 4.00%
Phosphorus Pentoxide (P2O5)0.00%
    Soluble in neutral ammonium citrate0.00%0.00% P
    Soluble in water 0.00%0.00% P
Potassium Oxide (K2O) soluble in water4.00%3.32% K
    Calcium Oxide (CaO)4.00%2.86% Ca
    Sulphur Trioxide (SO3)15.00%6.00% S
    Iron (Fe) 9.00% Fe


For further information regarding Maxwell Advanced Iron Universal 4-0-4 +9Fe Mini 20kg or any of our other turf fertilisers, please contact our technical sales team on .

Delivery charges (if applicable) applied at checkout. Next working day delivery is available on ‘In Stock’ items, on orders placed before 12 noon. Please allow 3-5 working days on all other orders – possibly longer during the festive season & bank holidays. Please note deliveries to more remote areas may also take longer. More delivery info Please Note: If you have any access restrictions for lorries or large vehicles please speak to our sales team on . Collection from our Naul, Co. Dublin, Trade Counter is available for this product. More info on collections