Dear Grower,

In this post we want to explain more about plant fertilizers NPK ratio’s, micro elements and trace elements. There are actually three different kinds of plant fertilizers. These categories are the mineral plant fertilizers, the fully organic fertilizers and the semi mineral-organic fertilizers. The Cellmax fertilizers are the most in the organic mineral and mineral segments Plant fertilizers always contain the letters NPK. We call these primary elements, you also have secondary elements an micro elements. But let’s start with the primary elements.

What do these N-P-K letters mean?

  • N stands for Nitrogen also called nitrogen nitrate. This element in our plant fertilizers increases plant growth and the development of green parts of the plants. Nitrogen also improves the production of leaf green and energy productions. At least the Nitrogen prevents the aging of plants and stimulates the production of leaves. The total of nitrogen in our mineral fertilizers consists of a percentage nitrate nitrogen (NO3) and a percentage ammonia nitrogen (Nh4). Those two types combined will form the total amount of nitrogen (N) Cellmax has also organic bound Nitrogen in some products. These forms of nitrogen are from origin from animal/plant droppings, or plant material (vinasse) You can recognize when your plant has enough Nitrogen when the leaves are healthy normal green. And logically when your plant has light green leaves and stems it might have a nitrogen deficiency.


  • The P in NPK stands for Phosphorus, also mentioned as (P205). Phosphorus improves also the growth of the plant and is responsible for the root development and energy transport in the plant. Phosphorus also is a important element for the production of genetically material in the plant.


  • The K in NPK stands for Potassium, also expressed as(K2O)Potassium is in opposition of Nitrogen and Phosphorus not a building material but stands for pure muscle. Potassium is responsible for firm cell development and cell pressure. This will result in a firm standing plant and no hanging leaves. Potassium is also responsible for the transport of nutrients to all parts of the plant. For the growth of your plant you need a higher value of Nitrogen and lower values of Phosphorus and potassium. But keep in mind that all primary nutrients are essential for as well growing and blooming.

Next to the primary elements a plant also needs micro nutrients to grow or to bloom. According to the law of the chemist Justus von Liebig “the growth of a plant is limited when its missing one element, even when all the other elements are richly present. Optimum plant growth is limited when one element is not present in the fertilizer. That’s why Cellmax has included all the necessary elements such as micro elements and secondary elements. The secondary elements will be explained next.

  1. The first secondary element is calcium(Ca). Calcium forms the building elements for the cell walls of the plant.
  2. The second secondary element is Sulfur(S) this element is taken up in smaller proportions in proportion of NPK. Sulfur optimizes the production of proteins and amino acids. It also has a good influence on the water management of the plant.
  3. The last secondary element is Magnesium(Mg) and is necessary for the making of leaf green and energy production

The micro elements also called spore elements are the following:

  • Iron(FE) is responsible for the construction of leaf green.
  • Manganese (Mn) Cares for the metabolism of the plant and works together with enzymes and stimulates the cell dividing in the plant.
  • Zinc(Zn) has a positive effect for the metabolism and the building of proteins. When you have a zinc shortage you will recognize that the plant will not grow normal and the shortage will give the plant less resistance against sunlight.
  • Copper(Cu) is necessary as element of the plant life process , when there is a shortage on Copper you will encounter plant growth problems and grow point problems
  • Borium(Bo) increases the stability of the Cell Wall and accelerates plant growth
  • Chlorine (Cl) is responsible for the release of oxygen during the growth process
  • Molybdenum (Mo) is a important element for the production of enzymes and stimulates the nitrogen compounds.
  • Sodium (Na) is important for a good cell pressure and for the plant growth
  • Silicon (Si) cares for the plant strenghtness, and is increasing the plant resistance against diseases

We hope this blogpost gave you a bit more insights in the plant nutrients world! If you have any questions, don’t hesitate to mail us, or leave a comment below! Happy growing, Cellmax Nutrients & Substrates

Leave a Reply

Your email address will not be published. Required fields are marked *