How to identify potassium deficiencies in cannabis plants?

Written by on 20 May, 2020

Even if you take care of your cannabis plants and try to provide them with the sources of the nutrients, they need, you may at some point let details slip, and that will only end up harming them, because in certain cases, plants start to be deficient in nutrients.

Fortunately, cannabis itself can give us signals if something goes wrong. This time we will tell you how to identify the lack of potassium in your marijuana plantation, so you can act quickly.

Signs of potassium deficiency

Cannabis needs specific conditions to develop, and when it does not get enough nutrients like potassium, it does not grow properly. So how do you figure out the lack of this element? Well you have to watch out for some points like:

1) Appearance of the plant

Physically, it is easier to realize this situation. You see, under these circumstances, the tips and ends of the cannabis leaves begin to show a brown or yellow coloration.

Try to focus on the edge of the leaves, but check them in general anyway. If this problem is not corrected it can be very negative for your growing. Over time, the leaves will start to curl as if they were burned. The veins of the leaves will keep their green, but the stems and petals will look reddish.

You will also see spots and necrotic spots appearing and if they are not treated, they may become chlorotic.

2) Growth

These situations tend to slow down the growth of cannabis, its leaves become small and the branches grow weak. In addition, in the flowering period the development of the first flowers is delayed, affecting the final product.

Another thing you can get from the deficiencies of this nutrient is by stretching the plant, if one looks taller than the others do, you should be careful.

Why do these problems happen?

Several factors can cause a plant to be deficient in potassium. Make sure you control the lighting and the pH of the soil and the irrigation water, and try to maintain a balance in the nutrients in the substrate; otherwise, your cannabis may be affected. To correct this situation you can use fertilizers rich in this element.


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