? Magnesium deficiency in marijuana plants: Why is it?

You may have wondered on occasion why your cannabis plants are not blooming the way they should. You have strictly followed all the steps to grow them, but still, your plants do not grow healthy. At these times it is normal for concern to invade you and you think that if you do not detect the problem in time you could lose your plants and all the work you have dedicated to it. One of the possible causes that your plant does not grow healthy is usually the magnesium deficiency in marijuana plants. It is a problem that can occur at any time and affects all strains equally if it is not detected in time. For this reason, in today’s article we will talk about the importance of magnesium for plants. Let’s get started!

Magnesium deficiency can stunt the growth and development of your plants, so you need to have a basic understanding of why it is important to plants.

Why is magnesium important for plants?


Magnesium is one of the fundamental elements for plant life. The problem is that no plant develops it by itself, so we must provide it ourselves through fertilizers and additives.

Marijuana plants absorb sunlight through the chlorophyll during your process of photosynthesis. The chlorophyll It can be considered the blood of plants, since they are responsible for transforming light into energy for plants.

Magnesium is a crucial component for chlorophyll molecules and photosynthesis cannot occur without it. This is why your plants need this essential element.

How to identify magnesium deficiency in marijuana plants?


To identify the lack of magnesium it is necessary that you pay attention to the lower part of the plant and its leaves.

First, look at the condition of the leaves at the bottom of the plant. The old leaves will gradually dry out and turn yellowish in color, while the tips will dry out and turn brown.

This is because the magnesium available to the plant goes from the oldest leaves to the newest, leaving the edges of these with a burnt appearance.

This magnesium deficiency can spread rapidly through the plant if it is not remedied immediately. If it manages to expand, the shoots will turn white and the stems will turn purple.

It is possible that, even if you are fertilizing your plants well with continuous magnesium inputs, a magnesium deficiency may appear in your plants. This problem occurs when the plant is supplied with a high level of calcium, potassium or sodium in the substrate.

Special care must be taken with plants grown in indoor grow cabinets. These plants are more exposed to magnesium deficiency, since the substrate used to grow them may not have enough magnesium that your plants require to grow.

How to prevent magnesium deficiency?


The easiest way to prevent magnesium deficiency is to give your plants the daily care they need. Having said this very romantic phrase, it would be better if we explain it to you more in depth.

From MatillaPlant We always place special emphasis on the importance of checking the condition of your plants every day. Only in this way will you be able to detect and solve any problem in time and keep your plants healthy.

The ideal solution to prevent this magnesium deficiency is to wash the plant with water to remove the old nutrients.

The next step we must follow is to correct the pH of the crop for both nutrients and water. The optimal level is 6.0 to 6.5 in soil, and 5.5 and 6.5 for hydroponics or if you use coconut substrate.

This is one of the ways to get rid of magnesium deficiency in your plants. However, you will need this problem not to occur again, so the best way to avoid it is by using fertilizers that add this element to your crop.

exist substrates for soil crops, coconut or hydroponics that can make your life a lot easier.

Where is magnesium found?

magnesium deficiency

Magnesium can be found in dolomitic limestone that is used in much of soilless growing media. The problem is that they do not usually have the amount of magnesium that plants need for their growth, so it must normally be provided through additives.

Magnesium can also be found in water. It is easy to think that when we water the plants with water we are providing them with a certain amount of magnesium. This is true, but it is possible that the water with which you water your plants does not contain a considerable amount of this mineral.

One piece of advice we give you is to have this water analyzed to make sure it contains at least 25 ppm of this element. If not, you will have to provide it with additives.

What additives can I use when I detect magnesium deficiency in my plants?

Magnesium Eco


Magnesium Eco Agrobeta is a mono nutrient that is responsible for correcting this deficiency based on magnesium and amino acids. With this product you will be able to revoke the symptoms of your plants by applying it directly to the ground or by spraying it on its leaves.

Magnesium 7%


The additive Magnesium 7% Canna brand plays a very important role in chlorophyll, essential for photosynthesis. Its content is applied in irrigation and through the foliar way, which allows your plants to absorb them quickly and have a stimulating effect on their growth and flowering.

Atami CalMag


The CalMag Atami is a fast-acting additive that is applied to your magnesium-deficient plants that provide calcium and magnesium to your plants and can be used in any type of substrate. Apply it to your plants adding 0.1 to 1 ml of this additive for each liter of nutrient solution.

Nutrient deficiency is a fairly common problem for many growers. The good news is that there is a wealth of information available. The main thing is to detect the problem in time to be able to solve it as soon as possible and prevent it from spreading throughout the plant.

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