Cannabis Nutrient Deficiencies: and how to Fix It?

Cannabis Nutrient Deficiencies are the basic components of the cannabis plant and are crucial for their survival. These are the same thing as oxygen is to the human body. The plants suffering from cannabis nutrient deficiency eventually die. Nutrients are further subdivided into macronutrients and micronutrients.

Three of the most important macronutrients required by all cannabis plants include Potassium, Phosphorous, and Nitrogen. Even all the plant foods contain a specific percentage of these mentioned macronutrients, referred to as N-P-K level. These are required in large quantities by the cannabis plants, to carry out their key functions.

In the same manner, micronutrients are important no matter how tiny the required quantity is. These are instantly available in potting soils whenever you need to add them to the soil. Some of the common micronutrients required by cannabis plants include zinc, boron, manganese, sulphur, molybdenum, iron, chlorine, and calcium. Plants do not need much of them, still lacking out on them would make the plant’s growth deteriorate gradually.

Cannabis Nutrient Deficiencies in Plants

Any type of Cannabis Nutrient Deficiencies in plants is a sign of concern. Nutrient deficiency can be of several types in the cannabis plant, including boron, copper, magnesium, zinc, phosphorous, and calcium deficiency. Once you start noticing the signs, do not panic, and get ready to take some precautionary steps immediately!

Same as human beings, these plants need a lot of healthy diets to carry out a healthy life. With the right amount of nutrients, cannabis plants make it to the best growth and flowering. Lacking a single of the essential nutrients would lead to slowing down of the growth, and thus the entire plant production would be affected.

The best part about cannabis plants is, they easily indicate their nutritional gap whenever any cannabis nutrient deficiency occurs.

Sending out signs instantly, such as fading, decoloring, wilting, or curling of leaves, these plants show you that they might be missing out on any essential nutrient and some action is required, to bring their growth back to normal.

How to Avoid from Cannabis Nutrient Deficiencies?

Keep a strict check on the overall pH level of the nutrient-water solution that is being used. Once the plant shows the signs of deficiency, that is an indication of the fact that the cannabis plant is not absorbing nutrients successfully. With incorrect nutrient levels, lockout conditions will take place, resulting in disastrous situations.

 You need to be more cautious and attentive regarding the pH level of the solution. However, if you are regularly following the right watering techniques and feeding out plants the right way, and the plant is still not showing growth, that might be an indication of altered pH levels due to which the plant is not able to absorb these nutrients.

What are Mobile and Immobile Nutrients?

Understanding the importance of mobile and immobile nutrients helps plant growers to better understand and examine plant nutrient deficiencies. Mobile nutrients are the ones that can be moved to the plant areas wherever they are required. Their Cannabis Nutrient Deficiencies in Plants is instantly noticed in older plant parts. If any of the new plants require any of the mobile nutrients, the older plant parts can easily supply those nutrients to such parts.

Talking about the immobile nutrients in the cannabis plants, these are the ones that cannot be moved or distributed in the plant parts, and thus remain intact in the same place. The plants cannot relocate them and their deficiency first shows up in the new parts of the plant.

Ensuring the Right Balance of Nutrients Deficiencies in Cannabis

If your plant is getting an improper balance of pH levels, it would not be able to absorb minerals and essential nutrients, and thus would not be able to function properly. The right pH ratio lies between 6.0-6.5.

Any fluctuation in the pH levels would result in the cannabis plant struggling to absorb the main nutrients to survive out, referred to as a “lockdown” of nutrients. This can be prevented through routine flushing with the right water solution. The nutrient level and pH level in the soil being used can also be altered using these mentioned techniques.

According to various researches, the root zone of any cannabis plant is always full of lies and consists of a complete network of different microorganisms that fully work in synchronization with the root system. Therefore, the right balance of fungi and bacteria is required by the soil for breaking down these organic substances and picking out nutrients of the system for further routine use by the Cannabis Nutrient Deficiencies.

Many of the plant growers make use of the living soil for ensuring no nutrient deficiency occurs in the long run in their plants. This also helps the biodiversity in the root area of the plant and helps them survive freely, also benefiting out the plant growth and production as a whole.


There are many other short-term and quick solutions available at cannabis dispensary Toronto, that are used by many of the plant growers for achieving the right growth, and for ensuring they are not missing out on any special nutrient in their cannabis plant. All of the nutrients that are in-taken by the roots are fully distributed over the leaves, and to all the parts of the respective plant.

Types of Cannabis Nutrient Deficiencies and their Fixation Methods

Nutrient deficiency in Plants is a phenomenon quite common in plants and can be fixed by taking some precautionary measures. Below are mentioned the common types of nutrient deficiencies in cannabis plants, with precautionary measures mentioned for fixing out those deficiencies. With some extra effort, you can easily save your entire yield of cannabis!


Whenever you see any thick growth tips that look a bit abnormal on your plant or some yellow spots on the newly-grown leaves, it is a sign of boron deficiency in your plant. Most of the time, the upper leaves of the plant are going to observe this type of deficiency.

 Whenever the pH level is high than normal, boron cannot be absorbed by your plant, as it can only be absorbed in lower pH levels. This makes an imbalance of boron in the plant, which is considered an essential nutrient for growth.


Make sure to keep the right balance of pH level and make it constant to ensure the right growth. in the case of hydroponic growths, the level should be 5.5-5.8.


This type of deficiency in your plant is a bit difficult to diagnose. You need to check out for small, broken leaves, brown spots, drying out of the leaves, crinkling, dead spots, or some dark green spots on the leaves. In any of the mentioned scenarios, the situation is pretty clear that your cannabis plant is suffering from calcium deficiency. Most of the time, this deficiency comes up with iron and magnesium deficiency.


You can achieve back the normal level of calcium in your cannabis plant, by flushing your plant with water that has the right balance of pH in it. This helps in resupplying the calcium to the plant. You can also use nutrient-water solutions along with Cal-Mag to make sure your plant never suffers from this type of deficiency shortly.


Most of the time, this situation occurs whenever you start observing some purple or dark blue undertones on your plant leaves, yellow tips and edges of the leaves, too shiny leaves, or slow growth or ripening of the buds. All of this happens due to improper adjustment of pH levels.


Make sure to keep a check on the pH and test your plant’s pH to have an idea of the right level to achieve.


When you start observing that your plant’s leaves are turning completely yellow, that might be a sign that your plant could be suffering from iron malnutrition. This situation is pretty similar to magnesium deficiency, differing in the scenario that the newest leaves will report the deficiency and will be completely yellow. In most cases when the pH level is too high, your plant will stop absorbing iron, leading towards its deficiency.


Quick flushing with pH-neutral water can help out the situation and you will be able to achieve and maintain the desired pH levels in your plant.


In this type of phenomenon, the outer edges and the veins of the leaves will be greenish-yellow in colour. Being a mobile nutrient, magnesium can travel from old leaves to newer ones. Its deficiency occurs when the pH level in the plant is too low than the average. Adding any magnesium supplements would not help the situation as the roots will not be able to absorb magnesium in any case.


You need to increase the pH level in the plant, up to 6.0 at least, until the deficiency gets resolved, and then maintain it back to 5.5-5.8.


The older leaves are yellowish or brownish, and eventually, die. Most of the time, the plant loses its nitrogen in the flowering phase.


Make sure to feed your plant the nutrients that are rich in nitrogen, and use a high-nitrogen solution for your plant.


Cannabis Nutrient Deficiencies: Your plant needs a lot of attention and with the right flushing techniques, proper balancing of pH, and the right nutrient solutions that are readily available at cannabis dispensary Toronto, your harvest is going to be worth it.

Puffs Haven


569 Yonge Street, Toronto, ON M4Y 1Z2

Puffs Haven is Toronto’s premier cannabis dispensary. We offer the hottest products with our exclusive partnerships to bring you premium products at affordable prices.

Welcome To
Puffs Haven

Are you 19 years of age or older?

in order to view this page you must be at least 19 years old.