Cannabis Leaves Curling Up: How to Fix Them

As a first-time grower, you should be expecting some problems to encounter regarding your precious cannabis. One of those that are somehow frustrating to face is cannabis leaves curling up suddenly. In such a case, expert growers recommend that you observe your crops closely as that is a sign that there is a problem with their growing condition.

There are various reasons why cannabis leaves start to curl up. Read on to learn more about them as well as how to fix them.

Reasons for Cannabis Leaves Curling Up

1. Too much Wetness or Humidity

The wetness of the growing area contributes more moisture to the flat, causing the leaves to become fat with water. Later on, as it becomes heavier, the tendency is for it to curl down or sometimes to curl up as well if the wetness is combined with heat.

2. Too much Hotness or Heat

This could be because of the stress that the cannabis plants suffer from due to such excessive temperature. This condition may worsen over a longer period of time if not fixed sooner.

3. Problems Involving the Root

The root is the center of everything in a plant’s life. Thus, if anything wrong happens to those roots buried in the soil, you will also see some sudden changes in the plant as a whole, too. 

  • Root rot is a condition relating to the root condition, which is commonly observed in weeds grown through hydroponics. There are pathogens present in the solution used in this process that tends to attack the root and cause them to rot. The common cause of this is too much heat, too. Not only does it cause cannabis leaves curling up but also having brown patches and other deficiencies.
  • Rootbound is another root-related condition wherein the plants stay in the same container for a very long time and have not experienced being in a bigger one. Rootbound tends to feel like being choked to die after a while.

4. Bad Quality of Soil

This pertains to a soil that is muddy and sticky, which usually has a problem with draining the water that was given to it even after a long time. If this is the kind of soil that you are using, it will not make any difference even if you water it properly or not.

5. Infestation

The usual, harmful bugs and pests that invade the grow area often cause the crops to be stressed and unhappy. Such a condition of stressfulness often leads to crops curling up or clawing. 

  • Broad mites are common in cannabis, which is undetectable at the beginning because it practically lives inside the plant. That strange look of leaves curly up suddenly should make you look into your crops and check for any of this insects that might be there already in the plant.

6. Too much Nitrogen

This condition is characterized by the curling tips of cannabis. Although nitrogen is an essential requirement for the healthy growth of your crops, too much amount of it, there will also cause a problem.

7. Excessive Nutrient Feeding

It is not bad to care for your crops in which feeding is one good indicator. However, putting too much of those things into the soil will also just end up giving you a headache, so limit them.

How to Fix this Problem

There is really a need to panic about seeing this problem in your crops. They are easy to fix, and there are several ways you can try for this to end. The sooner you heal your crops from it, the better chance you will have at reviving them, too.

  1. For crops suffering from coldness in the grow area, try adding more lights that can provide some more warmth to circulate and be felt by the crops.
  • Turn off any appliance or tool used to give enough ventilation to the crops as they need less of that in this case.
  • Put more mirrors or other reflective materials in the room so they can help in radiating the same amount of light within the entire grow area.
  • If you are growing the crops outdoors, it will be great to place them somewhere inside where they shall be away from the area with super cold temperatures.
  1. For growers who planted their crops in a very hot location, it will be, of course, the other way around. 
  • Move the crops at a distance from the grow lights, or you can just replace the lights themselves with something that produces less heat.
  • Putting more ventilation to the room is also applicable. The more air that is allowed to circulate within the grow area, the cooler it shall feel at the same time, you will be giving your crops some more oxygen to consume.
  1. Check the soil of your plants by pressing one of the fingers onto the soil. If a puddle of sticky mud appears, then it means you are overwatering it and has to stop doing so for a while. On the contrary, if the soil is super dry when you pressed it, then it means to add some more water because the soil is under-watered.
  2. Modify the recommended dosages of nutrients that you are asked to pour into your crops. If you think that it’s not good to have one whole bottle of nutrients to the crops, then go ahead and cut a bit of amount there.
  3. Use non-toxic pesticides that are fine to be used by humans and plants. Cut off those parts of the plant that has been seriously infested, and wash your crops with those effective liquid solutions you have are also two potential solutions to this problem.

Other Problems Related to Cannabis Leaves

1. Bud Rot

Often caused by excessive watering of the crops together with having no proper ventilation in the growing area. These conditions start from the inside parts of the cannabis before it slowly turns to a withered color of brown, and then the bud dies totally.

2. Powdery Mildew

A type of fungi that infests cannabis when there is much humidity in the grow room. It shall spread on a much bigger part in your cannabis crops until it is able to eat up all of it if no solution is made.

3. Incorrect pH level

This is related to how you mix the water and the nutrients that you put into your plant. Such liquid solution should be with the appropriate pH level before it is fed to the plants. Otherwise, nutrient shock may be suffered by your crops.

Final Thoughts

Anything that you will use in your crops should be scientifically proven and tested before trying them. If not, you are actually putting your crops in danger and your time and money in vain that you just wasted by not making the proper solution to such a problem. As growers of cannabis, it is your duty to make sure that all of your plants’ needs are met so you can achieve the result that you are aiming for. Putting the blame on the cannabis strain or lineage of the plant is not a valid reason. Seeing your cannabis leaves curling up would be such a sad sight to behold. However, following the steps given above and applying the knowledge of the things that are bad for your crops can save you and your crops from this problem.