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  • Common Name Potassium
  • Scientific Name K
  • Areas affected All plants
  • Main Causes Poor growing conditions and light, sandy or chalky soils.
  • Timing Mainly during spring and summer.

What does Potassium do?

Potassium is one of the 3 main macronutrients needed for healthy plant growth. The nutrient has many roles, however its main functions are to control the plants water uptake and aid the process of photosynthesis.

Symptoms of Potassium Deficiency:

A plant with a potassium deficiency will flower poorly and struggle to produce fruit. The leaves will often have a yellow or purple tint and the edges of the leaves will brown off and die.


To rectify potassium deficiency, use a fertiliser with a high potassium content, for example Nutrigrow 15-5-30 + 3Mg + 5S03 Soluble Revive which contains a massive 30% potassium.


We recommend using a fertiliser with a high potassium content such as Nutrigrow 15-5-30 + 3Mg + 5S03 Soluble Revive. There is also 5-0-29 Nutrigrow High-K Fertiliser which is ideal for paddocks & pasture, lawns, sports turf and amenity areas.

For more information on nutrient deficiencies, please get in touch with our sales team on 01522 246491.