Cannabis Rooting – How To Develop Healthy Roots

To grow healthy and produce spectacular buds, cannabis plants need a solid foundation to lean on. For this reason, the importance of creating and maintaining healthy roots is absolute. In fact, without a healthy root system, cannabis strains could easily fail to produce a decent harvest, or even, in the worst case, go to death. Read this article to find out how to develop and maintain healthy roots with the aim of growing a well-respected cannabis strain.

Cannabis rooting, healthy and fit marijuana seedling

Keep Cannabis Roots Healthy

To keep Cannabis Rooting in full health, four basic components will be needed, namely Fertilizers, Air, Water and Adequate Temperature. Without the presence of even one of these four components, the cannabis plant will unfortunately go to death. Let’s find out together why they are so important in the plant world.


While we often think of fertilizers as fuel for promoting vegetative growth and flowering of plants, they are equally important for strong root systems. Phosphorus and potassium are two key nutrients for root development, they help strengthen the existing root system and encourage plants to develop new nutrients. On the other hand, nitrogen promotes the growth of green parts. We highly recommend working the soil by adding potassium and phosphorus to the soil. For example, bone meal and phosphate rock are excellent sources of phosphorus, while glauconite and algae are sources of potassium and you can use them to work with the soil to help plants grow healthy roots right from the start.


Hydroponic cannabis plants white and healthy roots

Plants breathe through the roots to absorb some oxygen. This process is essential for the creation of ATP, which is a molecule that helps transport chemical energy in plants. When oxygen is insufficient, plants will not be able to transfer energy throughout the organism and will basically start to go hungry. Proper irrigation is an important part of the oxygen supply to plant roots. Excessive watering can sink roots, not only testing them for oxygen, but also providing breeding ground for pathogens. Therefore, what we recommend most of all is to always let the soil of the plant dry out between one watering and the other. The various types of pots also have a strong influence on the oxygen breathed by the roots.


The roots are constantly looking for water and nutrients. As the plant grows, the roots grow gradually and adequate irrigation must be ensured to continue promoting growth. This will mean gradually increasing the amount of water and the irrigation range provided to the plants. Whenever you water a plant, you’ll want to water it outside the radius of the plant’s roots. This will help the roots grow farther towards the edge of the pot to find more space and available nutrients. To have an excellent rooting of cannabis it will be necessary to administer water in the right quantities, without exaggerating or not.

White roots and healthy marijuana plant

Adequate climate

Cannabis roots prefer to be around 24-25°C, breathe and grow more at night. In hydroponic systems, the water temperature must be kept between 20 and 25°C. At these temperatures, the dissolved oxygen level in the water will reach its maximum, ensuring better nutrient absorption and faster growth.

How are the roots in full health?

Healthy cannabis roots are milky white in color and have no noticeable odor. If you are growing in pots their roots should be spread all over the soil, but don’t let them wrap completely around the side of the pot. On the other hand, marijuana plants with diseased roots have a brown color, a strong rotten smell, which is a clear sign of root rot or other root problems.

Solve the most common root problems

Having problems with the roots of cannabis is a clear sign that your cultivation is not working as it should, listed here you will find the most common problems that will affect novice growers, find out how to solve them.

Over Fertilization

Fertilizers help greatly in growing our plants and for rooting cannabis. Fertilizers help greatly in growing our plants and for rooting cannabis. In fact, excessive fertilizer is known to lead to root burn. How to solve the problem? The most common and used method is to wash the roots with an abundant amount of osmotic water and maybe next time pay much more attention to the doses of fertilizers.

Root Rot – Too Much Water or Harmful Fungi

Root rot is a very common problem among novice cannabis growers who don’t know when to water their marijuana seedlings the right way and frequency. Root rot will cause the leaves of the ganja strain to turn yellow and give them an unhealthy, near-dead appearance. To deal with it we must first of all be lucky and hope that the roots are not completely rotten by now. The only way to try to save the plant will be to transplant it into a pot with new soil and wait in the hope that it will be saved. After this experience we recommend that you be more careful with the doses of water you administer to your strains.

Marijuana seedling in the vegetative phase of growth

Too Cold or Hot Zone

The ideal temperature for cannabis is around 15 and 30°C. Outside of this range, marijuana plants will surely suffer and face complications of all kinds, the most common of these being a root problem. Temperatures that are too cold or hot will create a strong shock to the roots of the plants, thus generating a general wilting of the cannabis strain. Furthermore, if these inadequate temperatures last for too long, the seedlings will face death, or at best produce a minimal and unsatisfactory yield. We therefore advise growers to prevent this problem by always measuring the temperature of their grow box and to defend themselves from possible drops or excesses of temperature during the summer and winter seasons.

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Grace Genetics team

Our team of cannabis experts publishes new and updated informational articles on current news from the world of cannabis on a weekly basis, as well as aids and guides on growing marijuana plants.

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