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Growing 101:

Troubleshooting Cannabis Plant Problems

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Cannabis cultivation has become increasingly popular since the legalization of marijuana in several countries and states. As with any plant, cannabis plants can experience various issues during their growth cycle. In this article, we will explore common problems faced by cannabis cultivators and provide guidance on how to address them effectively. By understanding these challenges and the solutions, you can grow healthier plants and improve your overall yield.

1. Nutrient Deficiencies and Imbalances

One of the most common issues faced by cannabis growers is nutrient deficiencies and imbalances. These can manifest in several ways, including stunted growth, discolored leaves, and poor bud development. The three primary nutrients required for healthy cannabis growth are nitrogen (N), phosphorus (P), and potassium (K).

To avoid nutrient-related issues, it's essential to monitor your plant's health and provide appropriate nutrients at the correct time. A well-balanced nutrient solution can help prevent deficiencies and imbalances, but you should also be aware of the signs of specific nutrient deficiencies to address them promptly.

2. Overwatering and Underwatering

Watering is critical for cannabis plants, but both overwatering and underwatering can cause issues. Overwatering can lead to root rot, a condition where the roots become oxygen-starved and begin to decay. This can stunt the plant's growth and even kill it if not addressed. Underwatering, on the other hand, can lead to wilting, nutrient lockout, and reduced growth.

To avoid these issues, it's essential to learn how to water your cannabis plants correctly. One useful method is the “lift the pot” technique, where you lift the pot to feel its weight after watering, allowing you to gauge when it's time to water again by the change in weight.

3. Pests and Diseases

Cannabis plants can be susceptible to various pests and diseases, including spider mites, aphids, whiteflies, and powdery mildew. These pests and diseases can damage your plants and even destroy your entire crop if not managed effectively.

To prevent and treat pest infestations and diseases, it's essential to maintain a clean growing environment and monitor your plants closely. Regularly inspect your plants for signs of pests or disease, and take appropriate action, such as using natural pest control methods or fungicides to keep your plants healthy.

4. Temperature and Humidity

Cannabis plants thrive in specific temperature and humidity ranges, with different requirements during the vegetative and flowering stages. In general, cannabis plants prefer temperatures between 70-85°F (21-30°C) and a relative humidity of 40-70%.

Temperature and humidity fluctuations can cause various issues, including heat stress, cold stress, and mold growth. To maintain optimal conditions, invest in a reliable hygrometer to monitor temperature and humidity, and use climate control equipment as needed to create the ideal environment for your plants.

5. Light Burn and Light Stress

Light is essential for cannabis plants to grow and produce high-quality buds, but excessive light or incorrect placement of lights can lead to light burn or light stress. Light burn can cause the leaves closest to the light source to turn yellow or brown, while light stress can result in symptoms like bleaching or foxtailing.

To prevent light burn and light stress, it's crucial to select the appropriate lighting system for your cannabis plants and adjust the distance between the light source and the plants according to the manufacturer's recommendations. Monitor your plants for signs of light-related issues, and make any necessary adjustments to your lighting setup to ensure the health of your plants.


Growing cannabis can be a rewarding and fulfilling hobby, but it can also be challenging due to various plant problems that can arise. By understanding and addressing common issues like nutrient deficiencies, watering problems, pests and diseases, temperature and humidity fluctuations, and light burn, you can ensure the health and success of your cannabis plants.

Stay informed, proactive, and vigilant throughout the entire cultivation process, and you will be well on your way to producing high-quality cannabis plants. Remember that practice makes perfect, and with each grow cycle, you'll gain more experience and knowledge, further refining your skills as a cannabis cultivator.

Patricia is a dance-loving, animal-crazy individual with a passion for spreading the word about the amazing benefits of CBD. When she's not busy grooving to her favorite tunes, you can find researching all the ways CBD can enhance our lives.