Lack of calcium in marijuana - reasons

Calcium deficiency in cannabis can harm or severely limit the yield. Because every breeder is concerned with the best performance of the plant, early detection of calcium deficiency can be of paramount importance. This mineral element provides structure to stems and leaves, and also helps to better tolerate external stress, such as overheating in the sun.

Importance of calcium for marijuana

Cannabis plants, like humans and animals, also use calcium to strengthen and maintain cell walls. This is one of the secondary needs, along with magnesium and sulfur.

They are used in combination with essential nutrients (phosphorus, potassium, nitrogen) to help keep your cannabis plants healthy, strong and supporting the formation of new leaves and stems. Calcium is also taken up by plants to activate specific enzymes that have the ability to coordinate cellular activity.

Causes of calcium deficiency

Calcium is a semi-mobile nutrient that is poorly transported throughout the cannabis plant and tends to remain in the areas where it is supplied. For example, if you spray one of the leaves with a calcium solution, it will most likely remain on the leaf.

Detecting calcium deficiency and diagnosing it correctly is quite difficult. Mineral deficiency can be caused by periods of low humidity or prolonged periods of low temperature.

Another reason is the water with which the plant is watered. In fact, it contains enough calcium to accumulate in the soil and supply marijuana. But, if there are few dissolved alkali metal salts in it, then the soil must be additionally limed.

Calcium is transported throughout the plant only through a process called “transpiration.” This means that the root system takes a vital mineral from the soil mixture in which the cannabis plant is grown and transfers it to new leaves and buds where it is needed most.

Signs of calcium deficiency

Calcium deficiency in marijuana may begin to manifest itself with the following, most noticeable symptoms:

• shoots become weak, thin, and break easily;
• the plant reacts poorly to heat;
• newly formed leaves located at the top of the plant become dark green and the leaf tips are wrinkled, curled or misshapen;
• Cannabis inflorescence/buds do not fully develop or show slow growth;
• roots are weak, poorly developed and more susceptible to rot;
• With a severe deficiency of this mineral, the root system may become brown or brown and eventually die completely.

Hemp tends to absorb particularly high doses of calcium. Therefore, it is impossible to provide too much of it using the usual amount of nutrients from water and/or regular soil.

Treatment of calcium deficiency

The first thing to do when your cannabis plants are deficient in calcium is to check the pH level of the growing medium. For bushes grown in soil, the correct pH for calcium absorption is between 6.2 and 7.0. If plants are grown hydroponically, the best pH is between 6.2-6.5. When the pH of the substrate is not in the ideal range, it is necessary to rinse it with clean water.

The second step in combating calcium deficiency in plants is to add an appropriate hemp fertilizer containing nutrients to the substrate. It should be introduced after washing the soil mixture.

Since calcium deficiency rarely occurs in isolation and is often associated with magnesium and iron deficiency, it is a reasonable solution to give plants a mixture of these components in combination. If the acute shortage of minerals is not compensated, the marijuana bush will die.

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