Gro-Plus Sulphate of Potash

Replenishes potassium levels in soils. Gro-Plus Sulphate of Potash (or Potassium Sulphate) contains 40% potassium, one of the three major nutrients required by plants in large amounts. It encourages firm vegetative growth, increases resistance to disease and improves flower and fruit quality.


  • Great source of potassium.
  • Improves flower and fruit quality.
  • Ideal for mixing with Blood and Bone for an organically based complete fertiliser.


Nitrogen (N) 0%
Phosphorus (P) 0%
Potassium (K) 40%

Directions for use

One adult handful holds approximately 40-50g.

Apply Gro-Plus Sulphate of Potash at the following rates:

Base Dressing: Apply 45g per square metre and lightly mix into the soil.

Established Plants: Apply as a maintenance dressing at the rate of 15-30g per square metre and lightly mix into the soil.

Fertiliser Mixes: Because plants require a balanced diet, Gro-Plus Sulphate of Potash should in most cases be applied with other fertilisers containing nitrogen and phosphorus.

Material Safety Data Sheet

Feb15-tomato-grub-thumb web
Download now

Rating: 5.0

Recent feedback

Rated by steve_shirtliff from Auckland, North Island
Rated by blackguard1 from Conifer Grove, North Island