January 18, 2025

What is the Best Temp & Humidity for Cannabis Grow Room

by JasperMiller in News

As more regions legalize cannabis, both investors and individual growers are flocking to the industry. According to cannabis Sales Projections for US Markets in 2025, the cannabis market is expected to reach approximately $43 billion by 2025.

This offers both opportunities and challenges for indoor growing, as it can be tough to produce high-quality cannabis products consistently. They have strict requirements for plant growth lights, nutrients, and temperature. But don't worry, Medic Grow is here to help.

We’ll guide the ideal indoor temperature and humidity levels for different cannabis growth stages, including ideal seedling humidity and the best humidity for the flower. I hope this can help you create the perfect environment for your plants to thrive.

Why are Temp and Humidity Important for Cannabis

cannabis plants rely on optimal temperatures to perform photosynthesis effectively. High temperatures can lead to overheating, slowing down, or halting the outputs of photosynthesis. Conversely, low temperatures slow down the metabolic processes necessary for growth.

According to a study from the University of Mississippi, the rate of photosynthesis in cannabis decreases significantly at temperatures above 30°C (86°F). Prolonged exposure to temperatures over 40°C (104°F) can cause irreversible damage and reduced yields.

Extreme temperature fluctuations may even result in hermaphroditism in cannabis plants, allowing them to self-pollinate and produce seeds instead of flowers.

On the other hand, humidity levels are crucial for preventing mold on cannabiss, especially during the flowering stage when dense flowers increase relative humidity. High relative humidity can promote the growth of molds such as botrytis (flower rot) and powdery mildew.

Temperature and humidity also affect the plant’s ability to absorb nutrients. If the temperature is too high or the humidity is too low, the plant may struggle to take in essential cannabis nutrients, leading to deficiencies and reduced yields.

As noted by Robert Clarke's Cannabis: Evolution and Ethnobotany, maintaining optimal temperature and humidity levels helps sustain an ideal transpiration rate, which promotes nutrient uptake and development in cannabis.

Moreover, cannabis terpenes and resin are sensitive to temperature and humidity. Lower temperatures in the late flower (around 18-22°C or 64-72°F) help increase terpene distribution and resin content, enhancing potency and flavor.

As you can see, the temperature and humidity in a grow room are crucial for cannabis and they can interact with each other. Maintaining optimal temperature and humidity can result in higher yields with more aromatic, potent, and flavorful flowers.

Best temp and humidity chart for a cannabis

What Are the Optimal Temp and Humidity Levels for Cannabis

The best temperature and humidity levels for cannabis vary based on the growth stage. For seedlings, 68-77°F temp and 65-70% humidity. For vegetation, 72-82°F temp and 40-60% humidity. For flowering, 68-79°F temp and 40-50% humidity. The Night temp should be 5-10°F lower than the daytime.

Adjusting the temperature and humidity based on the different growth stages of cannabis can better meet the plant’s needs. Below is a breakdown of the temperature and humidity requirements for each stage, along with a cannabis dry temp and humidity chart.

Cannabis Seedling Stage

Light On Temperature: 68-77°F (20-25°C)
Light Off Temperature: 63-72°F (17-22°C)
Humidity: 65-70% relative humidity (RH)

During seedling, the plant needs a stable, warm environment (68-77°F) to support cell division and root growth. A drop in temp during the lights-off mimics natural nighttime, preventing stress and encouraging root development.

For ideal seedling humidity, It's important to maintain high humidity levels of 65-70%. It's because seedlings have underdeveloped root systems and heavily rely on leaf transpiration for water absorption, maintaining high humidity levels helps retain moisture in the leaves.

This recommended temperature and humidity closely mimic the natural conditions in spring when seedlings grow, which helps prevent heat stress and stretching, and is safer for beginners.

Cannabis Vegetative Stage

Light On Temperature: 70-85°F (21-29°C)
Light Off Temperature: 65-75°F (18-24°C)
Humidity: 40-60% relative humidity (RH)

Higher temperatures (around 85°F) during the vegetative stage, combined with full spectrum light, high light intensity and proper air circulation, are particularly beneficial as they allow the plants to maximize their growth potential.

In the early veg, maintaining higher humidity levels (around 60%) reduces the plant's transpiration rate, minimizing water loss and stress, thereby supporting healthy leaf and stem development.

As the plants grow and the root system develops, gradually lowering the humidity to around 40-50% helps prevent mold and pests while encouraging stronger root growth.

Cannabis Flowering Stage

Light On Temperature: 65-80°F (18-27°C)
Light Off Temperature: 65-75°F (18-24°C)
Humidity: 40-50% Relative Humidity (RH)

The best temperature for the flowering stage should be between 65-75°F. This temperature helps enhance terpene production, which contributes to the flavor and aroma of the final product. Lower temperatures also prevent heat stress, which can damage buds and reduce potency.

On the other hand, the best humidity for the flowering stage should be 40-50%, as dense buds increase the ambient humidity, raising the risk of moldy weed. By keeping humidity lower, you can prevent mold and bud rot.

This humidity also enhanced resin and terpene production, ensuring higher-quality buds. Jorge Cervantes confirms this in The Cannabis Encyclopedia, emphasizing the importance of controlling humidity for a successful harvest.

Harvesting Cannabis

Temperature: 60-70°F (15-21°C)
Humidity: 55-65% Relative Humidity (RH)
Duration: Typically 7-14 days

The best temperature and humidity levels for drying cannabis are 60-70°F (15-21°C) and 55-65% relative humidity. As outlined in Ed Rosenthal's The Marijuana Grower's Handbook, these ideal parameters help prevent mold and preserve the potency of the cannabis.

This is because cannabinoids like THC and CBD, as well as terpenes, are volatile and can degrade at high temperatures and low humidity levels. The recommended parameters not only help preserve cannabinoids but also prevent the cannabis from becoming overly dry.

Finally, after harvesting, cannabis should be stored in airtight glass jars in a cool, dry, and dark place. Maintain a relative humidity of 55-65% and keep the temperature below 70°F (21°C) to extend its shelf life.

If you're interested, also check out: Does Weed Expire?

Above is the ideal temperature and humidity for drying indoor-grown cannabis. You can also save the image below, which summarizes the temperature and humidity levels for all stages of cannabis growth. Hope this helps with your growing journey!

How to Maintain Optimal Humidity Levels and Temperature

We've learned about the varying temperature and humidity requirements for different cannabis growth stages. To cultivate cannabis successfully, it's crucial to control the temperature and humidity in your grow room. Here are some effective methods to help you.

Tools Preparation

Using the right tools can make all the difference. To accurately track temperature and humidity conditions and adjust them as needed, be sure to have the following tools on hand.

Thermo-hygrometer: Choose a device that measures both temperature and humidity and has a digital display for easy and accurate readings.

Air conditioner: Opt for a unit with energy-saving, heating, dehumidifying, and timer functions to efficiently control temperature and humidity while cutting down on energy costs.

Grow Fan: Select an oscillating fan with variable speed settings to improve airflow circulation more effectively.

Dehumidifier: Pick a model with smart dehumidification and timer features, and ensure it’s appropriately sized for your grow room.

Humidifier: Choose one with a humidity sensor and display, offering faster humidification for easier moisture adjustments.

Portable heater: Go for a compact, energy-efficient heater with thermostat control to maintain consistent warmth and save energy.

How to Lower Humidity

To reduce humidity in your grow room, use fans to enhance airflow and a dehumidifier to regulate moisture levels. Properly space plants for better circulation, and consider air conditioning to further lower humidity. Monitor conditions regularly with a hygrometer to maintain an ideal environment.

How to Increase Humidity

To increase humidity in a grow room, using a humidifier is the most effective method. Alternatively, placing buckets of water inside the tent, and hanging damp towels can help raise humidity. Other methods include lightly misting the plants, lowering the temperature, or increasing plant density.

Adjusting Temperature

Using the tools mentioned above can make managing the temperature in your grow room easier. Exhaust fans can expel hot air from the tent and bring in fresh, cooler air, which also helps increase CO2 levels—an essential element for photosynthesis.

If you’re using HID or fluorescent lights and find that the temperature is too high, consider switching to LED grow lights. Their aluminum construction allows for efficient passive cooling.

Additionally, adjusting the distance between the grow lights and the plants can effectively control the temperature they receive, preventing heat stress while ensuring adequate light exposure.

Conclusion

In conclusion, creating an optimal grow room environment with the right temperature and humidity is essential for cannabis growth. By maintaining the ideal conditions for each growth stage and using the proper tools, you can achieve consistent growth, vigorous plants, and a high-quality harvest.

FAQs about Grow Room Temp and Humidity Chart

1. What Is the Best Humidity for the Flower?

In the early flowering (weeks 1-4), maintaining humidity at 45-50% allows the plants to transition smoothly from the vegetative phase. By the late flowering (weeks 5-8 and beyond), humidity should be reduced to 40-45% to prevent mold growth and promote resin production.

2. What Humidity Level Is Optimal for Indoor Cannabis Growing?

The optimal humidity level for indoor cannabis growing depends on the plant's growth stage:

Seedling: 65-70% humidity. Young plants need high humidity.
Vegetative: 50-60% humidity. This encourages healthy root development.
Flowering: 40-50% humidity. This prevents mold and mildew.

3. What Is the Ideal Seedling Humidity?

The ideal humidity level for cannabis seedlings is 65-70%. This high humidity helps young plants absorb moisture through their leaves as their root systems are still developing. Maintaining this range promotes healthy growth and minimizes stress on the seedlings.

4. What Is the Best Temp and Humidity for Drying Cannabis?

The ideal temperature for drying cannabis is 60-70°F. This range helps ensure a slow and even drying process, which preserves flavor and potency. For humidity, aim for 50-60%. This humidity prevents the cannabis from drying too quickly, which can lead to harsh smoke and loss of essential oils.

January 19, 2025

How Much Can One Cannabis Plant Make?

The potential revenue from a single cannabis plant can vary widely based on factors such as yield and quality. Weed Yields can range from a few ounces to over a pound per plant, with prices varying from $140 to $420 per oz depending on quality and THC/CBD content. Consequently, revenue from one weed plant can range from a few hundred to several thousand dollars. For these reasons, many people may wonder how much marijuana is out of one plant and how to maximize profits from indoor weed growing. Today, Medicgrow will guide you through the value of growing marijuana indoors, detailing how to get the most out of it. After a brief overview, you'll be able to determine if growing marijuana indoors is worth your effort. Table of Contents How Much Marijuana is Out of One Plant How Much Is One Weed Plant How Much Is a Pound of Weed How Much Is a Quarter of Weed Maximizing Profits in Indoor Marijuana Cultivation Conclusion FAQ about How Much Can One Weed Make How Much Marijuana is Out of One Plant The average yield LBS of dried flower per THC plant typically ranges from 0.5 to 1.5 pounds (227 to 680 grams) for indoor grows and 2 to 3 pounds (907 to 1360 grams) for outdoor grows. Besides, the yield of marijuana from one plant is influenced by 3 key factors: Strain and Genetics: The strain’s genetic traits determine its potential yield and quality. High-yield strains like Exodus and GSC often produce more than others. Growing Conditions: Indoor plants usually have lower yields due to limited space, whereas outdoor plants benefit from natural light and larger growing areas. Light, Nutrients, and Water: The most important thing for growing cannabis indoors is indoor growing light. Adequate light, proper nutrients, and consistent watering are crucial for maximizing weed plant growth and yield. Apart from that, there are other factors such as marijuana growing techniques, growing methods (hydroponics and quality weed fertilizers), and so on. By reading the third part of this article, you can learn more about the indoor growing cannabis tips to maximize your yield. How Much Is One Weed Plant As we have seen, the value of a marijuana plant mostly depends on the yield and quality, which is variable, here are some references. Indoor cultivation of marijuana typically yields 0.5 to 1.5 pounds of dried marijuana and can earn between $16,00 and $3,200 if it is cheap and of high quality. Outdoor weed plants are generally more productive, yielding between 2 and 5 pounds. High-quality marijuana can yield $4,500 to $7,500 or more. The final profit depends on the cannabis yield and current market conditions, with premium varieties commanding higher prices. In addition to the yield of marijuana, the quality of the marijuana is also important; high-quality marijuana usually contains higher levels of active ingredients (such as THC and CBD) that provide more intense and long-lasting effects. The yield of a marijuana plant using different growing methods and tools varies, so let's check out how much is a pound of weed and how much is a quarter of weed a better mind. How Much Is a Pound of Weed The price of a pound of weed can vary widely depending on several factors, including the location, and quality of the cannabis. As of 2024, in the United States, the price for a pound of weed can range from around $1,000 to $3,000. Low-quality or bulk cannabis: Around $1,000 to $1,500 per pound. Mid-grade cannabis: Typically between $1,500 to $2,500 per pound. High-quality or premium cannabis: Can range from $2,500 to $3,000 or more per pound. Prices can be lower in areas where cannabis is legal and widely available, and higher in areas where it's less accessible. Additionally, fluctuations in the market, such as changes in supply and demand, can also affect the prices of a pound of weed, but what about how much is a quarter of weed? How Much Is a Quarter of Weed A quarter of weed, which is 7 grams, typically costs between $25 and $100, depending on the quality and where you’re buying it. In states with legal cannabis markets, you might find a quarter for as low as $25 to $50 for lower-quality weed, while mid-grade strains usually range from $50 to $75. Premium strains can cost $75 to $100 or more.If you're shopping in a legal state, it’s worth checking out dispensary deals, as many offer discounts for larger purchases or daily specials. Additionally, factors like the strain's potency, freshness, and whether it's organically grown can also impact the price.For first-time buyers, it's a good idea to compare prices across different dispensaries and read reviews to ensure you're getting good quality for your money. We’ve learned the economic value of marijuana. Let's take a look at how to grow marijuana indoors to maximize your profits. Maximizing Profits in Indoor Marijuana Cultivation Growing marijuana indoors is becoming more and more popular as it offers significant advantages. You may be wondering how to grow marijuana indoors for maximum profit, which includes saving money on growing marijuana indoors and maximizing marijuana yields. Below you will find more details. Saving Cost for Growing Weed Indoor The key to saving money on indoor weed growing is efficient grow lights. Advanced LED grow lights, such as the Medicgrow Fold-800, which retails for just $280, are the best choice because they are more energy efficient and last longer than traditional HID lights. Besides, creating the right light schedule will optimize cannabis growth and minimize electricity bills. When shopping for grow tent kits, purchase a combination of high-quality grow tents and light to save money. An inexpensive grow tent is also a good choice. Fans are also a cost-effective ventilation choice when purchased separately. DIY grow tents will save money if you have enough time and energy to collect and assemble them. If you're a commercial grower, make sure to buy from a manufacturer-direct LED grow light merchant like Medicgrow, as they tend to be cheaper and have guaranteed quality and after-sales support. LED grow lights such as the Medicgrow Full Spectrum LED Grow Lights are ETL and DLC certified and qualify for rebates of up to 80% of the cost from major U.S. utility companies. How to Grow Marijuana Indoors Effectly Maximizing indoor cannabis production is not difficult if following our tips: optimize lighting, nutrients, environmental conditions, and variety selection. Use a high-quality LED grow light to provide the full spectrum light needed for different cannabis growing stages. It’s notable that, the MedicGrow NEO 1000W grow lights offer 2 switchable spectrums for the vegetative and cannabis flowering stages, specially designed for all cannabis growing stages. Also, purchase the right size LED grow light to ensure even light coverage and adjust the height appropriately to avoid light burns. Maintain proper temperature (20-30°C) and humidity (40-60%), and use fans and add CO2 to enhance air circulation and ensure adequate CO2 for cannabis's photosynthesis. Additionally, avoid over- or under-watering by using high-quality cannabis fertilizer and adjusting ratios according to the plant's stage of growth. Select high-yielding varieties such as Exodus and GSC, and use a PH meter and EC meter to monitor plant health regularly to detect and solve problems in time. Proper pruning and low-stress training such as top pruning and low-stress training such as topping, FIMing, and LST also promote more bud formation. These practices guarantee that marijuana grows healthy and strong in the growth stages of cannabis, laying the foundation for a bountiful harvest. Additionally, harvesting marijuana plants at the optimal time for maximum THC yield is also crucial. Conclusion After learning about the value and yield of a marijuana plant, you may be interested in and have read all of our growing tips in this article. Keep in mind that light always matters. By reading this article on maximizing the value of growing marijuana indoors, I hope you have gained insights into growing indoor marijuana and, one day, successfully growing high-quality, high-yielding cannabis to maximize profits. Related Post: What Nutrients are Required For Growing Cannabis? Cannabis Flowering Stage: A Week-by-Week Guide When and How to Harvest Marijuana? FAQ about How Much Can One Weed Make 1. How Much Money Can You Make off 12 Plants? Assuming an average yield of 1 pound per plant, the total yield from 12 plants would be about 5,443 grams. In the marketplace, marijuana may cost anywhere from $5 to $20 per gram. Therefore, the total revenue from 12 plants could range from $27,215 to $108,862. 2. How Much CBD Oil Can One Plant Produce? The amount of CBD oil extracted from a cannabis plant depends on the variety of the plant. Generally, a single cannabis plant can produce about 1 to 2 pounds (454 to 907 grams) of dried cannabis flowers. Cannabis flowers typically contain 10 to 20 percent CBD.

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January 1, 2025

Low-Stress Training (LST) Cannabis Step-By-Step Guide

When growing cannabis, you may encounter issues like poor yields or suboptimal harvests, which could be due to not fully utilizing growing techniques. Successful cannabis growing requires more than just the right strain, nutrients, and efficient LED grow lights—it also demands effective cultivation methods. One such technique is low-stress training (LST), which is popular and highly effective in improving yields. LST flattens the cannabis canopy, exposing more bud sites to light and maximizing light utilization. In this article, we provide a detailed step-by-step guide to implementing LST, along with the best timing for starting low-stress training. If you find this article helpful, please subscribe and bookmark it—we’ll continue to bring you the latest cultivation tips. Table of Contents What is Low-Stress Training? Pros and Cons of Low-Stress Training Weed When to Start LST? How to LST Weed Plants (Step by Step) Conclusion FAQs about LST Cannabis What is Low-Stress Training? Low-stress training (LST) is a cultivation method where branches are gently bent and tied down to encourage horizontal growth and create an even canopy. This technique allows more light to reach lower parts of the plant, promoting uniform growth and potentially higher yields. Unlike high-stress methods like topping cannabis, LST minimizes stress on the plant, making it a gentler way to increase bud sites and improve light penetration. LST is particularly useful in small grow tents, as it helps keep the plant more compact. It requires regular maintenance to adjust the ties as the plant grows, ensuring that branches don't become crowded or damaged. By carefully managing the plant's growth, LST can lead to more efficient use of space and better overall results. Pros and Cons of Low-Stress Training Weed Before we start, let's briefly compare the pros and cons of Low-Stress Training to help you decide whether to use LST for your plants. Pros of Low-Stress Training Weed Low-stress training (LST) is a highly effective technique that offers multiple benefits for plant growth, particularly in controlled environments like indoor gardens. By gently bending and spreading the plant's branches, LST creates a more even canopy, which allows light to penetrate more deeply into the plant and a larger area to receive full spectrum light. This enhanced light distribution promotes uniform growth, maximizes photosynthesis efficiency, and results in bigger and more numerous buds, leading to higher yields. As LST enables growers to control the height and shape, it helps maximize yields by improving airflow around the foliage. Better airflow reduces the risk of mold, mildew, and pest infestations, contributing to overall plant health. Unlike high-stress training methods like topping, which involves cutting parts of the plant, LST is a gentler approach that minimizes stress, reducing the risk of infections or stunted growth. Overall, LST is a gentle and effective way that enables growers to achieve bigger yields from the same grow lights and grow tent kits without any additional cost. Cons of Low-Stress Training Weed If there are any drawbacks to LST, it is that LST is time-consuming and requires a certain amount of skill and patience to carefully bend and secure the branches while regularly monitoring the plant's status. As the effects of LST take time to show, it is important to check the plants at least every few days to see if the stems have shifted, allowing for timely adjustments to achieve the best results. Additionally, LST is gentle but risky, bending branches can lead to snapping or breaking if not handled carefully, which can stress the plant or create entry points for pests and diseases. In conclusion, Low-Stress Training is a gentle and effective growing technique that promotes plant growth and improves yield. However, it requires patience and a lot of experience, so If you're patient and eager to learn, then follow our growing guide and start LST! When to Start LST? The best time to begin Low-Stress Training (LST) is in the plant's early vegetative stage when the plant has grown 3 to 5 nodes. At this stage, the branches are still flexible, so it is easier to gently bend and shape the plant to form an even canopy that maximizes light. Starting LST early allows you to better shape the structure of the plant, promoting lateral growth and an even crown. Early training also helps to establish multiple main branches, which leads to more flowering points later on. However, LST is not a one-time effort; it is an ongoing process. As the plant grows, you'll need to periodically check and adjust the ties to guide new growth. Continuous adjustment ensures that the plant maintains an even canopy and that light reaches as many as the buds of the plant. How to LST Weed Plants (Step by Step) LST essentially bends and secures the cannabis stem to change the direction of growth, and can also be combined with Topping for even better results. Before we get started, let's prepare some tools to use for tying: Soft ties, garden wire or plant-specific ties Small stakes or anchors Healthy marijuana plants Sharp scissors (if you're going to Topping) Step 1: Start Early Start training the plant when it has 4 to 6 nodes (sets of leaves). At this stage, the stems are flexible and less likely to break when bent. Identify the main stem or a strong branch to start training, which is usually the topmost or tallest branch. If you want to top your cannabis plants, it's also the optimal time to do it during the 4-6 node vegetative stage. Topping involves cutting off the plant's top growth point with scissors. After topping, combining it with LST (Low-Stress Training) can help promote the development of multiple side branches, increase bud number, and make better use of the light. For more details about topping, you can refer to this post: "How to Top a Marijuana Plant?" Step 2: Bend and Secure the Main Stem If you choose not to top the plant, you will need to bend the main stem. Once you have identified the main stem, gently bend the main stem or tallest branch downward to promote horizontal growth. Be careful not to break the stem; the goal is to create a gentle curve. Then use soft ties to secure the bent branch to the side of the planter or other anchor point. Make sure the ties are loose enough to allow for growth and movement. The point of this step is to keep all stems the same distance from the light source, allowing light to reach each part of the plant. Step 3: Train More Branches As the plant grows, repeat the process for the following branches, bending them outward and securing them to create an even crown. Ensure that the branches are evenly distributed to avoid crowding, thus ensuring that light reaches all parts of the plant. The key point at this stage is to avoid bending too late when flexibility decreases and young trees are more likely to bend than older ones. Another point is to bend the pliable parts of the cannabis stems, which are located below the top leaves, and secure them gently with ties. Avoid bending the stems if they feel stiff, which could break them. Step 4: Regular Adjustments As the plant continues to grow, repeat this for any stems that are taller than the rest of the stems until the top of the plant flattens out to keep the canopy even and ensure that each branch has enough space and light. The plant training process requires you to patiently tend to your marijuana plants so that you can slowly shape a more even canopy as they grow, and also to avoid finding irregular branches too late so that you can bend them before they become too hard. If you accidentally break a stem, immediately secure the two broken stems together with tape and watch for a while so the plant has a chance to heal. Step 5: Final Adjustments Before Flowering Make the final adjustments to your plants before they enter the flowering stage. The cannabis flowering stage typically begins when transitioning grow lights to a 12/12 light cycle. Once flowering starts, the plant will focus on bud development, and further training may stress the plant. Therefore, the last chance to use LST is within the first few weeks of the flowering stage. As buds begin to form, some branches may become heavy. Use additional ties or stakes to support these branches and prevent them from breaking. Avoid LST after the first month of flowering unless colas grow too close to the grow lights or other parts of the plant aren’t receiving enough light. This ensures that all buds receive sufficient light. Step 6: Harvest Cannabis After a month of flowering, your LST (Low-Stress Training) and other works are finally complete. When your plants are ready for harvest, be careful when removing ties and supports to avoid damaging the branches or buds. If you’ve correctly followed our LST steps throughout the cannabis growth stages, congratulations! Your plants should yield a higher harvest under the same grow lights. Conclusion By incorporating Low-Stress Training (LST) into your cannabis cultivation, you can significantly enhance light exposure and improve overall plant health. Whether you’re a beginner or an experienced grower, LST is a valuable tech for maximizing your harvest potential. For more related information, please subscribe. We will keep you updated with helpful cultivation tips and insights. Related Posts: How to Identify and Use Male Cannabis Plant How to Use Cannabis Nutrients A Guide for Cannabis Flowering Stage FAQs about LST Cannabis 1. When Should I Start LST Training? It's best to start low-stress training (LST) on your cannabis plants when they have 4 to 6 nodes, typically around 3 to 4 weeks into the vegetative stage. It is beneficial to continue LST during the early flowering stages, but avoid LST after a month of flowering, which can interfere with flower growth. 2. Does LST Increase Yields? Yes, Low-Stress Training (LST) can help increase cannabis yields by creating a more even canopy allowing for better light distribution. LST also improves airflow around the plant, reducing the risk of mildew and enhancing health. This promotes the growth of more flower sites, leading to higher yields. 3. What Is the LST Technique for Growing? Low-stress training (LST) involves gently bending and securing the main stem of plants to force them to change their growth direction. This promotes a more even canopy and improves the effectiveness of grow lights, encouraging the development of multiple flower sites and enhancing overall yield.

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December 30, 2024

Topping Cannabis: When and How to Top Marijuana Plant

Topping cannabis is a time-tested gardening technique for both indoor and outdoor plants. Cutting off the plant's top forces it to grow multiple main colas (flowering tops), creating a denser structure, and allowing for even light distribution. This contributes to higher yields and better flower quality. As indoor cannabis cultivation has gained popularity, growing cannabis has evolved into a technical craft, with terms like Topping, Fimming, LST, and SCROG becoming part of the everyday vocabulary for growers. Today, we'll focus on how to top a marijuana plant—a fundamental technique that can significantly influence your plant's growth pattern and yield. With our straightforward guide on topping cannabis, I hope you can achieve higher yields and better flowers. Table of Contents What is “Topping Cannabis” Why Topping Cannabis Plants Important When to Top Weed Plants How to Top a Marijuana Plant: Step-by-Step Guide Other Tips for Topping Cannabis Difference Between Topped and Non-topped Cannabis Plants Conclusion FAQs about Topping Cannabis What is “Topping Cannabis” Topping cannabis is a gardening technique cutting the main stem just above a node, usually after 4-6 nodes have formed. This encourages the plant to produce multiple main colas (flowering tops) instead of just one, leading to a bushier structure and higher yields. The key benefits of topping include increased yield due to the development of more flowering sites and a more uniform canopy that allows for better light distribution, which supports healthier overall growth and development. For best results, ensure the plant is healthy and has adequate recovery time after topping. Why Topping Cannabis Plants Important Topping cannabis significantly enhances plant growth and yield for both indoor and outdoor plants. By cutting the main stem, growers encourage the plant to develop multiple flower sites, ensuring better light distribution and improving airflow. This leads to a bushier, more productive plant. Additionally, topping is valuable for controlling plant height, making it easier to fit in a small grow tent. It also promotes branch growth and makes them thicker, which better supports the weight of heavy flowers and reduces the risk of branches breaking under the weight of a mature cola tree. Cannabis plants do not naturally grow in a manner that fully utilizes LED grow lights. Topping cannabis enables more even light distribution and allows light to reach the lower parts of the plants, leading to healthier and more robust growth. When combined with other training techniques such as Low-Stress Training (LST) or Screen of Green (SCROG), topping can further optimize plant shape, light and space utilization for better results. When to Top Weed Plants The best time to top weed plants is during the vegetative stage, around the 3rd to 4th week of growth when the plant has developed 4-6 nodes. Make sure the plant is healthy before topping and allow the plant time to recover after topping. Topping too early or too late can limit its growth. If your plants are healthy, you can top them multiple times during the vegetative stage, giving them time to recover between each cannabis topping. However, stop topping a couple of weeks before switching to the flowering stage to avoid stressing the plants during their transition. How to Top a Marijuana Plant: Step-by-Step Guide Topping cannabis plants is a straightforward process, but it requires carefulness to ensure the plants respond well and continue to grow healthily. We provide a step-by-step guide and tips to help you successfully top marijuana. Step 1: Check the Health of Your Cannabis Before topping, make sure your cannabis plants are free of diseases or pests and in good condition. Topping will only go smoothly if your plant is healthy, strong and in a growth cycle where your plant has 5 to 6 leaf nodes. Step 2: Determine Where to Top First, locate the main stem of the plant, which is the main stem that grows directly upward from the soil. The top growing point is the highest point of the stem, usually the newest leaf or flower. Count down from the top growing point to find the 3rd or 4th node. A node is where a pair of leaves or branches grow out of the stem. Once you've determined this, you can begin cutting the stem. Step 3: Cutting the Stem First, sterilize your scissors or grow tent kits thoroughly with alcohol to make sure they are clean and sharp. This is to prevent the introduction of bacteria or other pathogens into the plant during the cutting process. Find the node you identified earlier and cut right above it. Make sure to cut with a steady hand and with the right amount of force to avoid injuring other parts of the plant. This action removes the top growth point and encourages the plant to branch out into two new lateral branches at that node. When you cut the main stem, make sure you leave enough room for the new lateral growth to develop. Avoid cutting too close to the node to avoid damage. Step 4: Care after Topping Topping can be stressful for the plant, so it's important to give it time to recover. After topping, observe the plant closely over the next few days. You should notice two new growing tips begin to emerge where you made your cut. This indicates that the topping was successful and that the plant is redistributing energy to support new growth. During this time, make sure that the plant's environmental conditions (e.g. full spectrum light, water and nutrients) are suitable for its recovery. Avoid further pruning or topping within a short period to give the plant enough time to re-establish a healthy growth pattern. Step 5: Re-Topping (Optional) If you want your plant to flourish even more, you can top it again after it has grown more nodes. The process of topping is the same each time; select the right node, sterilize the tool, and cut. Be careful to stop topping a few weeks before the start of the flowering period. This is because topping slows down the growth of the plant and topping too late may affect the flowering process and the final yield. Overall, by topping at the right time and point, you can effectively promote the branching growth of your cannabis plants, thus greatly improving their structure and yield. After each topping, take care to give the plant enough time to recover and adjust your care to its growth to ensure that it stays healthy throughout its growth cycle. Other Tips for Topping Cannabis Now that you've mastered the best timing and techniques for topping cannabis, are you eager to give it a try? Hold on! We've got some additional tips for topping cannabis: After topping, cannabis plants generally take about 3-7 days to recover. Ensure optimal lighting, cannabis nutrients, and watering, to support the recovery process. Topping should be done during the vegetative stage when the plant has developed 4-6 nodes, typically around 3-4 weeks into vegetative growth. If you want to top again, wait until the new branches have developed several nodes after the first topping. Plants can be topped 2-3 times before switching to the flowering stage. You can top a tall cannabis plant but if the plant is already well into the flowering stage or too tall, topping might not be ideal, as it can reduce yield. In addition, we cover the differences between Topping and Super Cropping and Fimming. Topping vs. Super Cropping Topping and super cropping are both techniques used to enhance cannabis growth, but they differ in approach. Topping involves cutting off the plant's top growth point, while super cropping involves gently bending and slightly damaging the stems. Both methods can increase productivity. Topping vs. Fimming Topping involves cutting off the entire top growth tip to form two new main colas. Fimming requires cutting about 75% of the top growth tip to produce 3-5 new colas. Topping results in a more controlled growth pattern, while filming can lead to a fuller canopy with potentially more colas. The term Fimming comes from the phrase “f**k it, I missed it” and it is thought that the first person to try this technique made a mistake when trying to trim his cannabis plants, but succeeded and his cannabis grew more new stems. Fimming may not be the optimal pruning technique, but it is effective for growers with 2-4 cannabis plants in a confined space. It can result in the development of 3-5 new main stems from each fimmed site, leading to a bushier plant. In summary, topping, super cropping, and filming each offer unique benefits depending on experience and space. Topping is simple, easy to learn, and suitable for small to medium spaces. Super cropping requires more skill and is better suited for medium to large spaces. Fimming is ideal for limited vertical height and encourages horizontal growth. Difference Between Topped and Non-topped Cannabis Plants Topped cannabis plants often excel in indoor environments with limited vertical growth space, promoting bushier growth and better light distribution. In contrast, non-topped plants are ideal for outdoor cultivation, where natural growth patterns and taller growth can occur without space limitations. Here are the detailed differences between them. Benefits of Topped Cannabis Plant Better light distribution across the plant after topping makes it easier for light to penetrate all parts of the plant, promoting even growth. Topping the plant causes the plant to transfer growth hormones to the lower branches, resulting in a more lush structure and multiple main stems. Topping encourages the plant to develop more flower sites and to take full advantage of light, nutrients and carbon dioxide, thus potentially increasing total yield and flower quality. Topping allows air to circulate more freely around the plant, thus reducing the risk of mold, which is especially important in cramped and humid growing conditions. Benefits of Non-topped Cannabis Plant Non-topped cannabis plants maintain a natural growth structure with a single dominant cola, leading to a strong central stem that can support the plant's weight more effectively. This vertical growth is ideal for growers who prefer taller plants or have limited horizontal space. Additionally, non-topped plants experience uninterrupted growth, allowing them to reach their full height more quickly. This approach also requires less intervention, making it a simpler option for growers who prefer a hands-off approach. In summary, topping alters the natural growth pattern of the plant, resulting in a bushier and more productive plant. On the other hand, untopped plants have a central cola and may be less productive than topped plants. However, they offer a simpler option for growers who prefer a hands-off approach. Conclusion In conclusion, topping is more suitable for small space cultivation and beginners, and if you combine topping with other techniques such as LST, the results will be better. However, it is important to remember to avoid topping too early or too late, correct topping ways and timing can significantly improve the quality and quantity of cannabis harvest. Related Post: What Nutrients are Required For Growing Cannabis? When and How to Harvest Marijuana Cannabis Flowering Stage: A Week-by-Week Guide FAQs about Topping Cannabis 1. How Long Does It Take Cannabis to Recover from Topping? Cannabis plants typically take 3-7 days to recover from topping. During this time, the plant redirects energy to lateral growth, developing multiple main colas. Providing optimal conditions, like proper light and nutrients, can help speed up the recovery process. 2. At What Stage Do You Top a Cannabis Plant? The best time to top a cannabis plant is during the vegetative stage, usually when it has 4-6 nodes. It is critical to ensure that the plant is healthy and growing well before performing the topping technique. Topping too early or too late can stress the plant or limit its growth potential. 3. Do Cannabis Plants Need to Be Topped? Topping is optional but beneficial for many growers. It encourages bushier growth, increases flower sites, and improves light penetration. However, it's not mandatory, especially if you prefer a simpler approach or are growing in a space where vertical growth is not restricted. 4. How Many Nodes Before Topping? It's best to wait until they have at least 4-6 nodes before topping. This ensures that the plant is strong enough to handle the stress and can redirect energy to developing new growth points. If the plant is growing well, you can repeat topping to further promote growth.

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