Have you ever noticed your cannabis leaves curling down and wondered why? Check out this blog post to find out the answer and learn how to fix it!
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The Problem: Cannabis leaves curling down
Cannabis leaves curling down is a common problem that can be caused by a number of different factors, including: heat stress, lack of water or nutrients, pests or diseases, and even genetics. If you notice your cannabis leaves curling down, it’s important to try to identify the cause so that you can take steps to fix it.
There are several ways to achieve this, but perhaps the most reliable method is to submit a sample of the affected leaves to a cannabis testing lab. They will be able to test for a number of different conditions and give you an accurate diagnosis. Once you know what the problem is, you can take steps to fix it and get your cannabis plants back on track.
The Cause: Too much water
One of the most common reasons for cannabis leaves curling down (and one of the easiest to remedy) is too much water. When your plant is getting too much water, the leaves will start to curl down as a way to prevent water from getting inside the leaf and causing it to rot. You’ll also notice that the leaves will start to turn yellow or brown, and they may even fall off.
If you think your plant is getting too much water, the first thing you should do is check the soil. If it’s saturated or wet, you’ll need to let it dry out before watering again. You can also try testing the moisture level with a simple moisture meter, which can be found at any garden center.
Once you’ve determined that too much water is indeed the problem, you’ll need to take steps to correct it. If you’re growing in soil, make sure you’re using a well-draining mix and refrain from watering until the top inch or so of soil is dry. If you’re growing in coco coir or another type of soilless media, make sure you’re using a quality drainage system so that any excess water can quickly escape. In both cases, you may also want to consider using a root zone heater to help encourage evaporation and prevent root rot.
The Solution: Less water
If you notice your cannabis leaves curling down, it’s likely that they’re not getting enough water. When leaves curl down, it’s a defense mechanism to prevent them from losing too much water. If you believe that your plant isn’t getting enough water, increase the frequency of your watering schedule and make sure to check the soil moisture before each watering.
The Cause: Too little water
One of the most commongrow problems is when leaves start to curl down or under. This can be alarming, especially if you don’t know why it’s happening. In this article, we’ll go over the three most likely reasons your leaves are curling, and what you can do to fix the problem.
The Cause: Too little water
If your leaves are curling down, it’s probably because they’re not getting enough water. Leaves will curl in order to prevent themselves from losing too much water vapor through evaporation. Check the soil around your plant to see if it’s dry. If it is, give your plant a good watering and see if the leaves uncurl within a day or two. If they don’t, the problem may be something other than too little water.
The Cause: Too much water
While too little water will cause your leaves to curl down, too much water can also cause this problem. If your plant is sitting in water or the soil is constantly moist, the roots may start to rot. This will stress the plant and cause the leaves to curl down in an attempt to prevent further moisture loss. If you think your plant may be getting too much water, try letting the soil dry out for a few days and see if the leaves uncurl. If they do, you’ll need to adjust your watering schedule so that the roots don’t stay wet for too long.
The Cause: Temperature stress
Temperature stress is another common reason for leaf curling. If the temperature is too hot or too cold, cannabis plants will react by curling their leaves. The ideal temperature for cannabis plants is between 70-80 degrees Fahrenheit during the day and 60-70 degrees Fahrenheit at night. If the temperature gets outside of this range, you may see some leaf curling.Try to keep your grow space within these temperature ranges and see if that fixes the problem. If not, there may be another issue at play.
The Solution: More water
If you see your cannabis leaves curling down, it’s likely due to a lack of water. When cannabis plants don’t get enough water, their leaves will start to curl inward in an attempt to prevent water loss. If you think your plant needs more water, give it a good drink and check back in a few hours to see if the leaves have stopped curling.
The Cause: Nutrient Deficiency
One of the most common reasons your cannabis leaves are curling down is due to a nutrient deficiency. When your plant doesn’t have enough of a specific nutrient, it will start to show signs of stress. One of those signs is usually leaf curling.
The most common nutrient deficiencies that cause cannabis leaves to curl down are a lack of nitrogen, phosphorus, or potassium. If you suspect that your plant is deficient in one of these nutrients, you can try giving it a foliar spray of the nutrient in question. You can also try giving your plant a general-purpose fertilizer that contains all three of these nutrients.
Other possible causes of curled cannabis leaves include heat stress, light stress, humidity stress, pest infestations, and chemical burns. If you’re not sure what’s causing your plant’s leaves to curl down, it’s always a good idea to consult with a qualified cannabis doctor or dispensary staff member for help diagnose the problem.
The Solution: Fertilize your plant
If your leaves are curling down, it could be a sign that your plant is not getting enough nutrients. The solution is to fertilize your plant. Cannabis plants need a lot of nutrients to grow properly, so if you’re not fertilizer them regularly, they can start to show signs of deficiency. Not sure how to fertilizer your cannabis plant? Check out our guide on how to fertilize cannabis plants.