How Do You Use Plant-Prod MJ Cannabis Fertilizers With A Two Part A&B Nutrient System?

Are you used to a two part A&B cannabis nutrient (i.e., nutes) system and unsure of how to implement the Plant-Prod MJ fertilizer program? In this article, we’ll explain A+B marijuana nutes systems and explain how to use one while getting the purity and productivity of Plant-Prod cannabis fertilizers. We promise the switch is easier than it looks.

Why Two Part A&B Cannabis Fertilizer Systems Are Used

Complete cannabis nutrient systems are broken into two parts – aka A&B – in order to supply your cannabis plants with all the macro and micronutrients they need to grow the biggest buds possible while keeping the different nutes separate due to incompatibilities. The solubility of products and the availability of the nutrients to the plant are negatively affected when two incompatible products are combined and react to form insoluble compounds. 

An example of this would be dissolving a product containing a nutrient like sulphur with a product containing calcium. These two products would react to form gypsum – insoluble calcium sulphate. Insoluble nutrient compounds won’t be available to your plants and will clog your lines and emitters. 

Concentrations of these products in dilution will affect the chance and severity of these reactions which is why you may not see them in low concentration liquid feeds.

It not only leads to additional time to clean your irrigation system but also means that those nutrients aren’t getting to your plants and helping you grow the biggest buds for your fertilizer investment.

How To Use A Two Part System With Plant-Prod MJ Fertilizers

Typical A-B systems separate calcium / magnesium containing formulations and phosphorus containing formulations. In the case of Plant-Prod MJ, consider Cal-Kick as your constant Part A, and the stage specific formulations, Boost, Grow, Bloom, and Finisher as your Part B.

Graphic of how to use Plant-Prod MJ Cannabis Fertilizer two part A&B nutrient system

Each Plant-Prod MJ cannabis fertilizer formulation contains a complete micronutrient package to ensure no micronutrient deficiencies. And are sourced from the best raw materials in the world with no fillers and no additives so your cannabis plants get 100% of what they need to grow bigger, denser buds and nothing they don’t.

Graphic of Plant-Prod MJ Cannabis Fertilizer Program Weekly Schedule

For more information on each formulation, visit our Plant-Prod MJ cannabis fertilizers product page. Talk to your local Plant-Prod sales rep about how to best introduce the Plant-Prod MJ Fertilizer Program to your growing set up and to find a Plant-Prod fertilizer supplier near you.


Plant-Prod is a leading manufacturer of 100% water soluble fertilizers including water soluble cannabis fertilizers. The choice of growers from California to Maine for over 70 years, we formulate with everything from chelated iron, to calcium nitrate and zinc fertilizer in order to help you improve yields while cutting fertilizer costs. Click here to find a Plant-Prod fertilizer supplier near you.

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