Cannabis plants can be really problematic when it comes to growing. This happens for a 2 main reasons: lack of knowledge and too many variables. Cannabis plants are very unique and require a lot of attention and understanding of their needs.

To grow a high quality crop of cannabis, you need to take the time to learn about the types of problems that can occur in a grow room and the steps that can be taken to prevent them. In this post, I will discuss some of the most common problems, and provide methods for fixing them.

You can grow great weed just about anywhere in the world, but there are some common growing problems that every grower will experience. This article will point out the most common problems and solutions.

word-image-11285 Cannabis is a plant like any other. She needs care, good care and love. But unlike most other plants, he can reciprocate your love in the form of cones of excellent quality. At the same time, you may encounter many problems, and you may not know how to solve them immediately. There are many guides to help you understand the basics. For example, you can learn how to grow plants with GreenBudGuru. While this will be a great help, you will need additional knowledge and experience if you want your plants to be top quality. Here you will find information on the most common problems in cannabis cultivation and some tips on how to solve them.

Problem: pH and nutrient burnout problems

The pH of the growing medium is very important for your cannabis plants. If the pH is too low, the plants will take too long to absorb nutrients and will not grow properly. If it is too high, your plants may burn from the nutrients. If this happens, your plants will become stressed and the leaves will turn yellow or crackly and eventually fall off. In severe cases, recovery may be impossible. Therefore, try to avoid food burns at all costs, and if they do occur, take immediate action. The pH also influences the development of the roots and the general health of the plant. If something goes wrong, you may not get the ideal buttons you expect. Solution: Don’t wait until something goes wrong to find a solution – check your pH every day. If it is too low, add lime. If it’s too high, sulfur can help. If your plants are suffering from fire blight, remove dead leaves and give the plants more space for better air circulation. Spray them with clean water so the nutrients don’t do more damage. Use a fertilizer that is suitable for your plants and make sure it is not too concentrated. Add air to the room – this prevents overheating, which can contribute to a food fire.

Problem: Pests and vermin

It is likely that some insects will one day try to eat your cannabis plants. Some are small and hard to spot, others are easy to spot and fix. However, they can all do a lot of damage if left in your garden for too long. Solution: Make sure your garden is well lit – insects like dark places, which should deter them. Use pesticides carefully and sparingly – some can be toxic to your plants and to you. You can also find some tips on how to fight bed bugs naturally.

Problem: Too hot

If the temperature of the grow room is too high, it will be difficult for the plants to grow properly. As a result, they can become long and thin because they don’t get enough light and nutrients. Solution: Check the temperature of the grow room regularly. Use a thermometer to check the temperature – make sure it does not exceed 85ºF. If this happens, move the plants to a cooler room or use fans to lower the room temperature.

Problem: drooping leaves

Falling leaves can be caused by excess water or lack of nutrients. Certain pests, such as spider mites and aphids, can also contribute to this problem. Solution: Check the humidity and make sure there is enough air in the grow room. Add fresh air and change the water if it has been there for more than two weeks. Make sure the plants are free of insects and provide good lighting.

Problem: Hanging leaves

The leaves on your cannabis plants can start to curl up if they don’t get enough water, especially during flowering. This happens when there is a calcium deficiency in the culture medium. It can also be associated with an excess of potassium and phosphorus, which prevents the plant from absorbing enough water through the roots. Solution: Check the water and pH levels regularly to make sure everything is in order. You can also add Cal-Mag fertilizer or liquid lime to the water and soil at least once a week until the problem is gone.


Growing cannabis is not an easy task: If you want good quality buds, you have to put in the effort. But even if you do, there will always be problems: pH problems, parasites, high humidity and heat, lack or excess of nutrients, etc. But don’t worry: Anyone can handle it, and so can you. You just have to figure out how to do it. To avoid the most common problems with potted plants, try to stay in control: Check pH and water levels regularly, water your plants, prevent overheating, insects and treat problems on time. Remember: Give your cannabis plants some love and they will give it back.Here at KPCB we have learned a lot over the years and have found many good ways to grow cannabis. We know what works for different strains and how different strains react to different problems. We also know that learning is never ending and as we grow we get smarter. We have taken all of this information and condensed it into a blog post which covers common problems and how to fix them.. Read more about leaf diagnosis chart and let us know what you think.

Frequently Asked Questions

How do you fix low phosphorus?

Phosphorus is a mineral that is critical for the production of chlorophyll in plants. It is also required for the production of ATP in plants, which is crucial for the creation of energy and the transport of nutrients throughout the plant’s body. In some plants, phosphorus is also used for the production of proteins, and is required for their production. When phosphorus levels are too low, plants will often have the following signs: I was pretty surprised at how low the phosphorus level is in my soil. I’ve heard that most gardeners have the Phosphorus content of their soil around 2-3.0 ppm, but I have a Phosphorus level of around 0.3 ppm. So, how do you fix low phosphorus?

How do you fix nitrogen toxicity?

Nitrogen is a key nutrient in the life cycle of most plants, and is the fourth most abundant element in the universe. While the vast majority of this element is inert gas (N 2 ), the production of nitrates and nitrites are key to good health. Marijuana is a very effective medicine for pain relief, and it is being used more and more for other medical conditions as well. But it can also produce some side effects that could have been avoided had they been more sensitively managed. In this article we will talk about three of these side effects, which we call nitrogen toxicity:

How do they fix potassium deficiency in plants?

Potassium is an important nutrient for plants, and potassium deficiency can cause many issues for the cannabis plant. If you grow hydroponics , or grow your cannabis in soil, these problems may not apply to you, but if you’re growing your cannabis indoors and hydroponics , you will be treating your potassium deficiency as soon as possible. One of the most common ways of treating potassium deficiency is by going to your hydroponics supplier and purchasing potassium chloride . This is a granular form of potassium chloride that can be dissolved in water. This can then be added to your reservoir nutrient solution to increase your potassium levels. Potassium deficiency or potassium deficiency symptoms are common issues with growing cannabis plants. Symptoms of potassium deficiency include: weakening and soft stems, dark spots on leaves, rusty green foliage, and slow, browning, and yellowing of leaves. There are many reasons for potassium deficiency in plants. Common causes include: over-fertilization, high nitrogen fertilizers, too cold temperatures, and potassium chlorate. Some of these causes can be avoided by using less fertilizers, and other causes can be fixed by using more potassium chloride and potassium sulfate in the soil.

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