Analysis: 12% Nitrogen, 18.8% Phosphorus, 10% Potassium, 1% Sulphur, 0.1% Iron, 0.05% Manganese, 0.02% Boron, 0.015% Zinc, 0.011% Copper, 0.007% Molybdenum

Bag Size: 25kg

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


Campbells Diamond High P 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, and trace elements.

Diamond High P 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 High P is ideal for plants during establishment, where high Phosphorus is required to help stimulate root development.

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 High P is suitable for application via irrigation systems (fertigation) in soil grown crops. It dissolves rapidly and completely and remains in solution ready for root adsorption.

Campbells Diamond High P is particularly important for:

  • Promoting root establishment with higher Phosphorus levels
  • 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. When applying Diamond High P 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 High P 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.