Analysis: 19% Nitrogen, 2.5% Phosphorus, 17.1% Potassium, 3.1% Sulphur, 1.5% Magnesium, 0.04% Iron, 0.02% Manganese, 0.01% Boron, 0.020% Zinc, 0.011% Copper, 0.001% Molybdenum

Bag Size: 25kg

A fully soluble fertiliser containing Nitrogen, Phosphorus, Potassium, Sulphur, Magnesium and trace elements recommended for vegetables, fruits, flowers, turf, vines and ornamentals grown in soil and soilless culture.


Campbells Diamond Blue is a fully water soluble, Chloride free fertiliser containing the required nutrients for consistent growth and development of a range of plants providing immediately available Nitrogen, Potassium, Phosphorus, Sulphur, Magnesium and trace elements. Diamond Blue is a soluble fertiliser alternative to dry spread complete fertilisers and can become the basis for a complete fertiliser program.

The specific formulation of Diamond Blue is ideal for plants during their early growth stages, where development of new shoots and leaves is the main goal or for crops that require additional Nitrogen.

The addition of trace elements helps to maintain balanced nutrition and is present mainly in the chelated form for maximum efficiency and uptake.


Campbells Diamond Blue is suitable for application via irrigation systems (fertigation) in soil grown crops, or hydroponic systems. It dissolves rapidly and completely and remains in solution ready for root adsorption.

Campbells Diamond Blue is particularly important for:

  • Early growth or where plants require additional Nitrogen
  • Additional vigour or development of new shoots, canopies or foliage
  • Situations where fertigated complete fertilisers are the preferred option


General fertigation rates for horticultural crops are between 25 to 70 kg/ha in field crops or approximately 1g/L in a hydroponic situation. When applying Diamond Blue through the irrigation system more frequently and smaller applications guarantee the nutrients are supplied to the plants without being lost due to leaching or excessive rainfall.

A more complete nutrient program would include both Campbells Diamond Blue and Campbells NitroCal, applied during alternate applications, however, as with any fertiliser program, it is best to seek advice from your Campbell’s distributor or your local agronomist.