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Grow Room Requirements for Cannabis

Increasing your cannabis supply requires more than just a desire to smoke a joint. Believe me; you’ll need a truckload of commitment and dedication to better appreciate this weed and tender it like a baby. As the global cannabis industry continues to grow and grow in popularity, many people have gotten into cannabis production. So rest assured, you are not alone in this quest. Recently, there has been a significant increase in the number of people growing weed behind their doors. In areas where the cannabis laws aren’t exactly favorable, you can find several grow rooms tucked away in basements or tucked away in small enclosures.

The thing is, all cannabis strains, if carefully cultivated, can grow anywhere. Not just in the open garden. In countries with modern rules, you can find fully functional and equipped industrial scale grow rooms for cannabis production. Regardless of your choice of plant size or enclosure size, cannabis grow rooms should be equipped to fully support plants. Cannabis has long been grown outdoors, so most strains available today have genetics that survive better outdoors. You will want to mimic outdoor conditions as closely as possible.
Giving your cannabis the same conditions as with its natural habitat takes a lot of hard work and dedication. You will need an indoor space of at least 1m2 to produce a continuous supply of grass each growing season. Depending on whether or not you want large harvest yields, your space allowance may be greater. You’ll want to make sure you have all the necessary equipment to help your plant through the seedling, germination, vegetative, and flowering stages. A good cannabis lighting setup is also necessary, especially if you are growing autoflowering strains.

Getting started: the conditions to be met

1. Space

Stealth is probably one of the main reasons people choose to grow their weed indoors. So you will need the right space to start with. There is no exactly fixed spatial dimension for growing cannabis indoors. The space you will need depends on many other factors, including the number of plants, the height of the light and fan, and the size of the odor control installation. Nevertheless, clutter is one of the easiest conditions to meet. Once you’ve sorted that out, you can move on.


2. Light and light proof

Cannabis plants need light to grow well. Especially during the flowering and vegetative phases, much of the operations of these plants depend on their light and dark cycles. Outside, the source of natural light meets this requirement. But in your grow room, it’s all up to you. A typical cannabis plant needs around 18 hours of light per day. During the flowering phase, it takes about 12. This reduction in light exposure is what triggers flowering. Unless you are only growing autoflowers, this light requirement is very important. You should also get the best cannabis grow lights for your planting operation.
Lightfastness is as important as the quality of the grow light you have selected. Your grow room should be completely light-tight. Once your plant enters the vegetative phase, it becomes very sensitive to the length of light exposure. There is a big problem if your grow room light is leaking out of the enclosure. This is because any crack that allows light to leak will also allow light to enter the enclosure. Light leaks can confuse your plant as it struggles to understand why the light cycle fluctuates unexpectedly. This can reduce your plant’s yield, trigger hermaphroditism, delay flowering or, at worst, cause plant failure.


3. Aerial Integrity

Your grow room should be airtight. As your cannabis grows and flowers, it produces large, resinous buds and gives off a characteristic smell. Sometimes the smell of the plant can be quite strong, spreading beyond the grow room and into the outdoor environment. This is a big deal because your grow operation can lose stealth this way. A well-sealed room helps trap the smell and ensures that it only stays in the grow room. You can also learn how to control the smell of the cannabis grow room. An airtight room also helps you regulate the air inlet. If your grow room is located in an environment with a considerable level of air pollution, you’ll want to make sure your plant is safe from airborne contaminants.
When your room is airtight, airborne pollutants cannot interfere with the growth cycle and reduce yield. A well-sealed room also helps you to safely protect your plant from insects, cannabis root aphids, vermin and airborne pathogens. If infected with all of these, your cannabis develops yields that are not only substandard, but also less appealing to cannabis consumers. If you are also ready to take your planting operations further and experiment with CO2 enrichment, an airtight room also helps you through the process hassle-free.


4. Climate control

Simulating a natural habitat for your cannabis plants starts with controlling the climate of your room. You will want to have conditions very close to what can be achieved in open gardens. Cannabis varieties, including plants with economic value, only thrive in ideal climatic conditions. Humidity and temperature are the main conditions you need to control if your plant is to grow properly. Generally, cannabis grown indoors thrives best in a temperature range of around 68 to 77 degrees Fahrenheit during the vegetative phase. During the flowering phase, the optimal temperature range is set at 65 – 85 degrees Fahrenheit. For humidity, depending on the stage of growth, indoor cannabis plants generally thrive best in a relative humidity range of 40% to 70%.
If the temperature is too high, the plant is exposed to too much heat. This could trigger cell death and nutrient loss. Plants also lose water and resinous buds can be easily damaged. Not only will potency be lost, but heat-sensitive cannabinoids can also be structurally altered. High humidity levels provide an environment conducive to the growth of fungus and mold. If left unchecked, molds and fungi can infect the plant and significantly reduce crop yield. The extremely dry condition also means the death of cannabis plants. Learning to regulate temperature and humidity is a skill you need to learn.


A. Temperature setting

Temperature increase

  • Grow Light: Grow lights emit different heat signatures and as such can help you regulate the temperature of your grow room. fluorescent. MH and HPS are known to give off more heat than LEDs.
  • Heaters: You can also use a heater as a conventional method to increase the temperature of your grow room. You must have sensitive equipment to track temperature levels when using the heater.

Temperature decrease

  • Control the airflow: A simple technique to lower the temperature of the grow room is to control the airflow. You can remove warm air from the room and bring in cool air from the outside environment using large fans. The cooling process can be unpredictable and depends on the outside air temperature.
  • Air Conditioning Units: Although expensive, air conditioning units are the most reliable method of reducing the temperature of a grow room. They are useful when fans are not enough to do the job.

B. Humidity setting

Increase humidity

  • Humidifiers: You can simply invest in humidity with a large reservoir of water. Humidifiers add water to the grow room and directly increase humidity levels.
  • Vaporizers: If you’re on a budget, vaporizers are your best bet. Using a spray bottle, you can easily add water to plants and introduce mist into the grow room. Be sure to only make the leaves moist and not wet.

Decreased humidity

  • Dehumidifiers: Dehumidifiers reverse the action of humidifiers on humidity levels. They remove moisture from the air. This helps you control a humid grow space and reduce the risk of mold growth.
  • You can also try watering your plant when the lights are off. The temperature is lower during this period and the water vapors can stay in the grow room longer.

Regulating temperature and humidity also involves the use of designated tools that can track changes in these parameters. An easy-to-use basic thermometer helps you track temperature changes. A hygrometer does the same for humidity.

5. Security installments

Your grow room should also be equipped with primary safety equipment that helps reduce the risk of plant loss. If your light source is too hot and you leave it on for an extended period of time, you increase the risk of fire in the grow room. Electrical faults in the lighting system can also start a fire in the grow room. A fire in a grow room can destroy your plants and cost you your investment. You can install a fire alarm or a fire extinguisher. These safety devices are best installed in an area of ​​the grow room where they are easily accessible.



When growing your cannabis indoors, your main goal is to simulate the conditions of the plant’s natural habitat. You need to pay close attention to temperature and humidity levels. Growing cannabis indoors has its challenges. However, setting up the right space can help you solve these problems.

Warning: This content is intended for educational purposes only. It has been compiled with research from external sources. it is not intended to replace medical or legal advice. Please consult your local laws for the legality of cannabis consumption.

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