cannabis root rot

Root rot in marijuana

We must avoid the marijuana plant to rot. The plant is rotting when the leaves begin to turn yellow and stop growing. Cure the rot is very complicated, so, we must prevent at all costs the plant sick and this can be done with simple care.

The root rot, scientifically known as Phytophthora

The root rot, scientifically known as Phytophthora, when the leaves of the plant occurs and also even stems buds, put first yellow, brown and then eventually end up falling. The leaves are disappearing and the plant dies.

The root rot arises especially in spring or autumn and when the temperature is between 15 and 24 degrees Celsius. It can occur when the following circumstances: the floor of the plant is too wet, or the plant is in a soil too hot, or has been used in excess fertilizer for cannabis high in nitrogen.

As regards the inside of the plant, the roots, they will also becoming brown (healthy root is white) because longer absorb food; and even the stem also may become brownish color.

When the plant is sick, little can be done. There are people who, seeing the leaves change color, try to irrigate more ground to believe that is due to the lack of water and precisely the opposite effect occurs: the problem is exacerbated.

Once you start to yellow leaves, the cannabis plant can die in just seven days.


As it mentioned previously, once the plant is the root rot disease is impossible to cure. But what it does do is to guide the care of the marijuana plant to prevent and avoid, as far as possible, the plant becomes ill.

Funki Fungi BAC / Stimulator based substrate Mycorrhizas

You can start by choosing a suitable substrate for the marijuana plant, a substrate that does not retain much moisture. You can choose, for example, Funki Fungi BAC / stimulator Mycorrhizas based substrat, a product that caters to the roots of food, water and nutrients needed for the plant to grow rapidly and vigor. Do not be obsessed with watering the plant and you have to keep the soil with good drainage so moisture does not build up. As for irrigation, do not take a hot water plant and not water it in the middle of the day, better early in the morning or late afternoon. If the plant is watered manually, you should be done slowly to avoid running water make holes in the ground and also to prevent the roots are not damaged. It should be added that cannabis is a plant that gets used for irrigation to be provided, that is, if a plant is accustomed to a certain amount of water must be maintained the same amount of water throughout the growing season.

In addition, change the crop water every 15 days. Also, the soil temperature must not be too high. We must also keep clean the whole environment of our crop: utensils, land, and even our hands (it is important that before handling the plant we have washed your hands with soap and water). Even the air must be clean, and this is achieved by aerating the growing area at least once a day for a few minutes.

Yes, unfortunately it is too late and the plant has fallen ill have to get rid of the land where it has been because it is contaminated and all that is planted there run the risk of becoming ill.

You can also prevent root rot using a stone bubble as those with aquariums and thus can ensure that the water used has sufficient oxygen.

The root rot affects less to the crops grown in dry land because they receive little water (though the nutrient intake is also lower and the harvest, therefore, will not be as plentiful). This type of dry land crop pests do not affect them much because they are not subjected to excessive moisture, so it is a kind of ideal crop. Of course, if the owner of the crop live in a humid place, there is no choice but to grow there.

Taking good care of the roots

For cultivating marijuana, surely one of the most important aspects is the number and quality of buds you can get. But we must not forget that the most important part of a plant are its roots. These, supply water, minerals and nutrients that all plants need. If the root of marijuana is healthy, the whole plant, including buds, grow healthy. So now you know: also watch what is not.

also watch what is not

In PEV Grow we want to help you avoid at all costs the root rot and for this you can find on our website the Trichoderma harzianum: protect plants and roots , it is a beneficial fungus that protects the roots of the cannabis plant. This fungus colonizes the roots of the plant by increasing the uptake of nutrients and water and protecting them from diseases. The fungus forms a shield around the roots makes the plant stronger and protects against many diseases.

Trichoderma Harzianum: protect the plant and roots

In Piensa En Verde we have also one of the best bio-stimulants root that currently exist, it is the Rootmax biostimulator Raices Green Hope , a product with which biological processes for bacterial life in the substrate are activated, significantly increasing the root system. And not only that, but the taste and crop production significantly increased. It also prevents mold problems and strengthens the roots in a remarkable way.

Rootmax Bio-stimulator of Roots Green Hope

By Noelia Jiménez, Team Piensa En Verde

Root rot in marijuana: We must avoid the marijuana plant to rot. The plant is rotting when the leaves begin to turn yellow and stop growing.

How To Identify And Treat Cannabis Root Problems

Cannabis root problems are usually called as root rot. Problems in the roots can be caused by different organisms such as bacterias, fungi, and parasites and although the symptoms are similar, they don’t always look exactly the same.

1. What Is Root Rot?

Root rot is a condition that can ultimately kill plants. This condition affects roots when they are not in an optimal environment and affects them when they’re more vulnerable, especially when they are already stressed or shocked.

Organisms as bacterias, algae, and fungi (among others) will attack the roots, making them into brown slime. This brown slime is unable to absorb nutrients and water and in most cases is impossible to fix them.

2. Root Rot Symptoms

Because the first symptoms of root rot occur under the medium, growers are often not aware of the problem until it is more serious.

Cannabis root rot can cause leaf symptoms that can look like any deficiency: cannabis leaves get burnt edges or tips; yellow or brown spots, nutrient deficiencies, and curled edges among others.

When plants start showing the consequences of root rot, such as yellow leaves or stunted growth it may be already too late.

3. What Causes Root Rot?

Root rot occurs when the roots are affected by a bad organism after they are already stressed. Root stress can be caused by any of the following things:

• Excessive Heat

Roots in a hotter medium have a tendency to develop problems associated with fungi and bacterias.

• Excessive Cold

Cold roots are unhappy roots, low temperatures in the medium can shock the roots and can cause wilting among other problems, resulting in root rot.

• Overwatering

Too much water tends to attract some type of bugs that reproduce in wet mediums and may drown your roots, both of these problems will result in damaging the roots.

• Thick Medium

If your medium is too thick, it may prevent the roots from being able to get oxygen.

• Big plant in a small container

When your plant has overgrown the pot it is in (meaning the pot is too small for your plant to develop properly) you increase the chances of developing root rot. If you reach a point where the roots need to grow more but they can’t due to not having space, they will start to rot.

• Hydroponics

Root problems are common in hydroponics, this happens when you don’t use an air rock to oxygenate the water. Depending on your setup oxygenating the water is required, not doing it will ultimately kill the plant.

4. How To Prevent Root Rot?

Preventing root rot is relatively easy. By solely providing an optimal medium for them to grow, you will prevent any possible problems they can have.

An optimal medium for roots to grow means providing the proper temperature, humidity, water, oxygen, and size of the pot.

If you take care of these, there won’t be a problem. If you failed to provide these and your plants are already suffering from root rot, there’s not much you can do.

5. How To Treat Root Rot?

The first step to treat root rot is to identify what is causing it, as said above, root rot is caused by not providing an optimal environment for your roots.

Because root rot is caused by different organisms, a solution that works for some growers may not work for others.

You should start by checking the environmental factors, such as humidity, temperature, watering frequency, and drainage of the medium. Adjusting the environment is more of a long-term solution, after you adjusted whatever was wrong with it, it’s time to combat the root rot with a short-term solution.

To combat root rot immediately, some growers use a mix with 100ml of bleach or hydrogen peroxide with 1L of water.

Using hydrogen peroxide will kill the organisms causing root rot but can be bad if you’re growing organically because it can kill good bacterias too. In such low concentrations, bleach shouldn’t be harmful but this is a cheaper alternative and may be harmful to the bacterias in some cases.

The best way to treat root rot if you are willing to send a little bit more is to use root supplements. This products are mixed into the water and provide everything a root need to grow healthy and also combat root rot. There are a variety of root supplements out there and the one you choose should be based on what you can afford and what will work in your case.

5. In Conclusion

Root rot is a really serious condition, most experienced growers opt to remove the plant from the growing space in fear the condition can infect the other plants, especially in hydroponic setups.

When dealing with this condition, the best thing to do is to maintain an optimal environment for your plant and roots because you’ll only notice something’s wrong after a couple of weeks when the conditions start to affect your plant’s leaves and branches, and at this stage, it is very hard to treat it, and even if you manage to save your plant, it will be left with serious growing deficiencies.

Cannabis root problems are usually called as root rot. Problems in the roots can be caused by different organisms such as bacterias, fungi, and parasites and al