Potassium Deficiency on Marijuana Plants

Potassium is one of the 3 vital elements that all flowering plants need to thrive. It’s main purpose is helping the Marijuana plant uptake nutrients up from the roots and regulating the photosynthesis process.Potassium is also used to regulate the opening and closing of the stomata meaning that it handles the CO2 uptake of the plant.

The final use is triggering the activation of enzymes and involved in the production of Adenosine Triphosphate (ATP). This last involvement might actually be more important in the regulation of the rate of photosynthesis than its role in the activity of stomata’s.

This means that if your plant is suffering from of lack of potassium, she won’t be able to assimilate enough nutrients, regulate well the CO2 intake nor control her photosynthesis… Kind of brutal no?

Potassium deficiency will show itself through the change in color of the leaves, but we’ll get into that in a second.

For more on the role of Potassium in the growth of plants check out this paper done by the International Plant Nutrition Institute, and for more info check out their website.

Here’s a recap of the usage of Potassium in the different stages of life of marijuana