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Nitrogen Deficiency in Marijuana Plants

Growing Marijuana In A Pot Can Be Easy, Follow Our Tips


Growing Marijuana


Nitrogen Deficiency in Marijuana Plants


A lack of nitrogen is the most common deficiency found in Marijuana plants. The first thing growers usually notice is that the leaves will turn a pale green. If the deficiency is not rectified, the leaves will turn yellow and then they will die. Nitrogen is easily mobile and can go anywhere in the plant, so the remaining nitrogen in the plant will move up the plant to help keep the new growth alive. As a result, growers will see the evidence first on the lower growth, moving inwards from the tips of the leaves. The overall growth of the plant may slow as well.

These are sure signs that your Marijuana plant is suffering from Nitrogen deficiency. However, the grower must be careful not to give the plant too much nitrogen in an attempt to compensate. If this turns out to be the case, the plant will begin to turn a darker green than normal, and the plant is more likely to become diseased and attract insects.

Nitrogen affects the amino acids and chlorophyll in the plant, and it also has an effect on photosynthesis. Nitrogen is essential for healthy tissue growth, so without nitrogen, your plants will be weak and stunted. Soluble or non-soluble nitrogen, such as urea, can be used to help stimulate the plant. Soluble nitrogen will be quickly absorbed by the roots, whereas non-soluble nitrogen will be broken down by the soil first. The quickest way to solve the issue of whether or not the plants will receive enough nitrogen is to check the fertilizers you use. They list the ingredients in order of what the highest amounts are, and if N (nitrogen) is first, you have little to worry about. Some of these fertilizers, however, release the nitrogen over a period of time, so it is important to still keep an eye on the plants.

The vegetative growth stage is when a lack of nitrogen will affect the plant most and lessen the eventual yield. It is very important in this stage to be sure that the plants have no nitrogen deficiencies. Too much fertilization can cause harm as well, so you must be cautious.

As the plant begins to flower, nitrogen use begins to slow, as too much nitrogen can inhibit the flowering process. A small amount of nitrogen is still necessary, but flowering uses amino acids, which are increased by other nutrients (P and K). There are fertilizers that have a high amount of these nutrients as well, but it is important not to use them too early, or the flowers may be too small. A careful balance must be maintained. If changing fertilizers to encourage blooming, do so slowly, so that the growth does not begin to drop off from a lack of nitrogen. A 1:1 ratio for the first week is good, a 2:1 ratio for the second, 3:1 for the third, and after the third week, only the flowering fertilizer can be used without worrying too much. Still, keep a careful eye on the plants and be prepared to supplement if necessary.


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