What is the perfect environment for growing plants and producing high-quality cannabis? When growing cannabis, temperature can be manipulated for optimal results.

Optimal indoor temperatures are crucial for a thriving cannabis crop. The best conditions will enhance both potency and yield.

This guide will explain how temperature affects your cannabis and how you can control it.

Optimal Temperatures For Growing Cannabis Indoors

Cannabis plants can thrive in various environments and still yield high-quality yields. However, when growing cannabis indoors, it is crucial to provide optimal conditions to compensate for the absence of natural sunlight, which is essential for the plant’s health.

Although lighting solutions can simulate natural sunlight, indoor cannabis plants often end up being less hardy than their outdoor counterparts.

With that in mind, utilizing temperature control to help your indoor plants thrive is imperative for indoor marijuana success.

Seedling Stage

Seedlings are delicate and require a stable, warm environment to encourage healthy root development and early growth.

Ideal temperature:

• Day temperature (lights on): 70-75° (21-24°C)
• Night temperature (lights off): 60-65° (16-18°C)

Vegetative Stage

The ideal temperature for a cannabis indoor grow during the vegetative stage is 70-85°F. This range is optimal as it promotes efficient photosynthesis and robust plant growth.

Varied temperatures that are too high or low will lower the rate of photosynthesis, and the growth rate of the plant itself.

Cooler night temperatures help mimic natural outdoor conditions.

When the lights are off, it’s best to have a temperature that is around 10° lower than the daytime temperature. So if you keep your grow room at 75° when the lights are on, aim for 65° when they are off.

Ideal Temperature:

• Day temperature (lights on): 70-85°F (21-29°C)
• Night temperature (lights off): 60-75°F (16-24°C)

Flowering Stage

In outdoor growing operations, cannabis plants flower in the Autumn when temperatures start to drop.

This ideal flowering temperature is somewhere around 65-80°F. The same 10° differential from light and dark is optimal as well, just as when in a vegetative stage.

This flowering temperature allows terpene and cannabinoid maturation. Too high temperatures can degrade sensitive terpenes, which will affect the flavor, aroma, and high of cannabis.

Manipulating your grow room temperature for flowering can also bring out purple, blue, and pink colors in the buds themselves when the temperature is low enough.

Ideal Temperature:

• Day temperature (lights on): 65-80°F (18-26°C)
• Night temperature (lights off): 55-70°F (13-21°C)

Late Flowering Stage

In the final weeks of the flowering stage, maintaining cooler temperatures can enhance color expression in the buds and further boost resin production.

Ideal Temperature:

• Day temperature (lights on): 65-75°F (18-24°C)
• Night temperature (lights off): 55-65°F (13-18°C)

Ideal Humidity Levels For Growing Weed Indoors

Discussing temperature without discussing humidity would be incomplete. Temperature and humidity are closely linked.

Variations in either can significantly impact plant health. Both factors must be carefully managed in order to have an optimal grow.

Higher humidity levels during the seedling stage help young plants retain moisture and develop strong roots.

During the vegetative stage plants benefit from moderately high humidity, which supports vigorous growth and healthy leaf development.

Slightly lower humidity during the flowering stage reduces the risk of mold and mildew while still supporting robust bud development.

Lower humidity levels in the final weeks help to prevent mold and promote the production of dense, resinous buds.

Problems From Temperatures Too Low For Indoor Growing

Too low of temperatures in indoor grow rooms can lead to a handful of problems.

Cold temperatures can slow down the metabolic processes in cannabis plants, leading to stunted growth and delayed development.

At too low of temperatures, plants may struggle to absorb nutrients effectively, leading to deficiencies and poor health.

Lower temperatures can slow down the rate of photosynthesis, diminishing the plant’s energy production and overall health.

Cold temperatures can hinder the production of essential oils and resins, affecting the quality and potency of the final product.

Problems From Temperatures Too High For Indoor Growing

Having a grow room temperature too high is much more common for indoor cannabis growers.

A marijuana growing temperature above optimal will increase the risk for pests like spider mites and diseases like powdery mildew.

Cannabis grow lights can put off a lot of heat that can create hot pockets directly below the lights. Proper air circulation and ventilation are crucial when the grow lights are on.

Keeping your cannabis grow room cool enough will be an ongoing job for indoor marijuana producers.

How To Control The Temperature In Your Grow Room

Learning how to control grow room temperature and humidity will make or break your indoor cannabis grow.

You can find the ideal temp for indoor grow room operations with a variety of appliances:

• Air Conditioner
• Space Heater
• Humidifier
• Evaporative Cooler
• Dehumidifier
• Fans

Air conditioners and evaporative coolers lower the temperature. Evaporative coolers also raise humidity levels.

Space heaters heat the room. Combination units that control humidity can raise or lower humidity based on the relative humidity of the cannabis grow room.

Fans don’t change the temperature. Instead, they keep air circulating and help you avoid hot and cold spots.

You may need some or all of these for optimal indoor marijuana growing conditions.

Get Your Cannabis Temperature Right!

Achieving the best temperature for marijuana is ideal for growing the best possible bud indoors. Managing your grow temperature with a variety of appliances is your best bet to ensure ideal indoor marijuana growing conditions.

If you want to learn about growing weed indoors and how to optimize the process, keep learning with us here at Cannabis Training University!

Luis Cordova

Luis Cordova is a distinguished author, and renowned expert in cannabis cultivation, who possesses a Master’s degree in Plant Biotechnology and Pharmaceutical Science. As a valued contributor to highly esteemed publications such as Cannabis Training University and Maximum Yield Magazine, Luis has emerged as a trusted source of guidance and knowledge in the cannabis industry. Having written thousands of informative articles, Luis is widely recognized for his comprehensive expertise on cultivating cannabis, both indoors and outdoors.

Discover why a grow tent could be the perfect solution for your indoor growing needs, how to set it up and use it effectively, ideal locations for placement, and a roundup of the best options available on the market today.

Why Use A Grow Tent For Growing Weed Indoors

Cannabis grow tents provide home growers with a convenient way to cultivate plants in a controlled environment.

Grow tents are portable, budget-friendly, and user-friendly spaces where growers can hang lights and fans and fully deck out the interior for high yields.

Grow tents are available at a wide range of prices, starting around $75 for basic models and reaching over $200 for larger or higher-end options.

The tents provide growers with a discreet way to grow inside, deter pests, and maximize the amount of light in the tent with its reflective interior.

What To Look For In A Cannabis Grow Tent

Cannabis grow tents have been a reliable solution for both amateur and experienced growers to grow marijuana plants indoors for years.

Modern cannabis growers have an expansive selection of cannabis grow tent options ranging in size, look, price, and quality.

Size

The best grow tent for you may not be the best for someone else. Grow tents vary in size and height. Growers should consider the height of a grow tent to ensure it’s tall enough for the plants and the grow lights.

Maximizing height in a grow tent allows growers to place the lights far enough away from plants leaving room for fans, ducting, and air filters.

Smaller grow tents, however, can restrict the growth of the plant due to the height limits. Ensure your grow tent is large enough to fit the cannabis plant you’re trying to grow. Investing in a larger tent for the future can pay off in the end. 

Growers should also take the width of the grow tent into account, ensuring there is ample space to accommodate additional equipment and allow for easy movement around the tent.

The average size of a cannabis grow tent depends on the grower’s needs and the number of plants being cultivated. Here are some common sizes:

• Small Grow Tents: Around 2′ x 2′ x 4′ to 3′ x 3′ x 6′, suitable for 1-2 plants.
• Medium Grow Tents: Around 4′ x 4′ x 6′ or 5′ x 5′ x 6′, suitable for 4-6 plants.
• Large Grow Tents: Around 8′ x 8′ x 6.5′ or larger, suitable for 8 or more plants.

Quality

Budget growers can definitely score a durable and resilient grow tent, albeit, affordable tents may not have as high-quality materials compared to more expensive tents.

Watch out for tent tears, broken zippers, poor temperature seals, and other environmental fluctuations that can reduce your plant growth due to tent material quality.

Features to Look For

Grow tents can be simple or include more advanced features to streamline the cultivation process.

Quick-viewing windows in grow tents let growers monitor their plants without the need to frequently unzip the tent, reducing exposure to light and temperature fluctuations.

Some grow tents feature upper and lower intake and exhaust ducting vents that can be quickly connected. Choose a grow tent with a large door opening so you can easily move in and out of your tent.

Grow tents often include removable waterproof floor trays, designed to prevent flooding and catch excess water from your cannabis plants.

Other features include tool pockets/pouches, which allow you to keep your thermometers, hygrometers, shears, and other gardening tools handy.

Some grow tents include a net trellis inside the tent, which are useful for growing cannabis plants that require a lot of support or plants that require a consistent height canopy.

The Best Indoor Cannabis Grow Tents On The Market

Indoor cannabis grow tents (small and large) can be found on Amazon, Walmart, and gardening outlets online.

Below, you’ll find a curated selection of some of the best indoor grow tent brands and specific models on the market (in no particular order) along with prices you can expect to pay to complete your grow set-up.

Gorilla Grow Tent

Gorilla Grow produces some of the most high-quality and durable grow tents for cannabis on the market. The tents are made with metal connectors and poles and have a durable and thick wall material.

Gorilla Grow tents give growers 360-degree access to the inside of the tent and offer easy-view windows to monitor your cannabis plants. 

Gorilla Grow tents offer extender kits that can increase the height of your cannabis grow to reach anywhere from six feet to nearly nine feet high. Their tents are the trusted grow tents for the serious indoor cannabis growers and can run you about $365 for a 4’ x 4’ tent. 

Gorilla Grow tents are the quintessential grow tent for cannabis that receive excellent reviews. They offer some of the thickest canvas material on the market and come with additional features that cannabis growers will love.

For instance, its infrared lined roof is ideal at keeping temperatures cool in your tent. Gorilla Grow’s LITE line is great for budget shoppers.

Secret Jardin

Secret Jardin has been a grow tent maker for well over 10 years. Their DRII grow tent is a mid-range tent that can hold about 65 pounds of equipment.

Secret Jardin’s tents are made with a proprietary method that keeps toxins from off-gassing the tent material. The Secret Jardin’s DRII grow tent can be bought for about $240. 

Secret Jardin’s grow tents are not quite Gorilla Grow quality, but are a solid option for any cannabis grower. Secret Jardin’s zippers offer a light-tight fit. Unlike other tents that may require ironing or gluing to maintain a pitch-black environment, Secret Jardin offers superior grow tent quality.

Oshion

Oshion mylar grow tents are for the budget growers who want to get experience growing indoors. Grow tents range from $70 to $130.

Oshion’s entry-level grow tent can run you about $75. Oshion grow tents are made of a thick and durable 600D mylar. They also come with a removable base tray, viewing windows, and various duct openings for proper ventilation.

Vivosun

Vivosun’s cannabis grow tents are made to last. Vivosun’s 4’ x 2’ grow tent is the perfect grow tent for closet cultivation.

Their mylar hydroponic grow tent can hold up to six plants at a time. Vivosun’s two-year warranty is one of the best in the business and ensures your tent can last for a while. 

Vivosun’s closet grow tent is made from dark 600D fabric on the exterior. Its zippers are solid.

It comes with a removable floor tray and support rods for your cannabis grow lights, fans, and ventilation equipment. Vivosun’s closet grow tent can go for about $70.

iPower Grow Tent

For cannabis growers with plenty of plants to grow, iPower’s hydroponic and water-resistant grow tent is a perfect choice.

If you have the space to fit these behemoth tents, the iPower grow tent can provide you with a removable floor tray, double-stitched and reflective material that eliminates any light leaks. 

iPower’s frame and metal poles are sturdy and can handle up to 110 pounds easily. iPower offers rear door access with snap hooks, diamond-shaped reflective interior walls, and adjustable vent openings.

iPower tents also feature various exhaust and intake ports to maintain the optimal growing environment.

CoolGrows

CoolGrows’ small indoor mylar hydroponic grow tents are ideal for those who can’t afford the higher-quality Gorilla Grows or Secret Jardin’s of the world.

Its tents are light proof, durable, and come with a viewing window for easy monitoring. Flaps over the sturdy zippers ensure you have a completely pitch-black environment inside.

CoolGrows tents come with a one-year warranty to protect you from making a bad grow tent investment. A 2’ x 2’ x 4’ grow tent can run you about $60. A 4’ x 4’ x 6.7’ grow tent can set you back about $84.

Quictent

Quictent is one of the most eco-friendly grow tents around. Its SGS testing and certification mean its soluble elements won’t leach out from the material when wet and contaminate the cannabis plants. Quictent features a reflective silver PET mylar lining and 600D Oxford fabric canvas.

Quictent comes with a two-year warranty so you know these tents are meant to last. A 4’ x 4’ x 6.5’ tent is about $105.

Indoor Cannabis Grow Tent Lights

Cannabis growers who are cultivating within a grow tent can choose from a variety of lights for their set-up.

Growers can choose high-pressure sodium (HPS) lamps, light-emitting diode (LED) lights, high-intensity discharge (HID) lamps and compact fluorescent lamps (CFL). CFL and LED lamps are considered budget-friendly options for small grow tents. 

Consider how your lamps can get and their energy-efficiency because you’ll be leaving them on for multiple hours a day.

LED’s are considered to be one of the most energy-efficient grow lights based on its upfront costs, durability, lifespan, maintenance costs, and energy costs. Finally, make sure your grow lights are full spectrum for the best flower production.

Weed Grow Tent Equipment & Accessories

Once you’ve narrowed down and bought your best grow tent and lights for growing weed indoors, you’re not quite done.

Setting up an optimized cannabis grow requires other essential equipment and accessories such as carbon air filters, hygrometer, exhaust fans, fertilizer, clean water, nutrients, growing medium, and the seeds or clones to begin the growing process. 

A fan attached to the airflow opening in the tent enables growers to have an optimal airflow all throughout the grow tent. Poor ventilation can lead to mold or fungi on your pants.

Carbon filters are also important to absorb the intense cannabis plant aroma and scent of fertilizers or nutrients within the tent. 

Using the right nutrients and a clean water source to grow your cannabis plants is another important aspect of successfully growing in a grow tent. For a successful harvest, it all starts with the right seeds or clones. Finding the right genetics can complete your marijuana grow tent kit. 

For more information about grow tents for growing weed indoors, sign up for Cannabis Training University’s online marijuana college. Learn how to grow cannabis just like the pros and on a budget. Sign up today!

Luis Cordova

Luis Cordova is a distinguished author, and renowned expert in cannabis cultivation, who possesses a Master’s degree in Plant Biotechnology and Pharmaceutical Science. As a valued contributor to highly esteemed publications such as Cannabis Training University and Maximum Yield Magazine, Luis has emerged as a trusted source of guidance and knowledge in the cannabis industry. Having written thousands of informative articles, Luis is widely recognized for his comprehensive expertise on cultivating cannabis, both indoors and outdoors.

Growing cannabis in a cabinet is a popular choice among indoor growers, and has proven its success rate many times over.

Growing cannabis in a grow cabinet calls for similar requirements as compared to other indoor methods such as growing in a tent or growing in a closet.

For starters, we’ve decided to make the first section of this article on building your own cannabis grow cabinet, in case you don’t have one yet!

How to Build a Cannabis Grow Cabinet

To make your own cannabis grow cabinet, follow the following process:

• Find an old or unused cabinet
• Line the inside of the cabinet with mylar or reversed foil
• Hang your grow lights to the inside of the roof
• Cut an appropriately sized hole in the back for fresh air intake
• Attaching an air filter to your intake hole is optional
• Cut a 4″ hole out of the top of the cabinet for outgoing air
• Add your plants with quality genetics

Growing Cannabis in a Cabinet Basics

When growing cannabis in a grow cabinet, your cannabis plants will thrive as long as you give them everything they need.

In order to thrive and grow in cabinet growing, your cannabis plants need the following;

• Grow Light (LED is recommended)
• Fresh air
• Grow Medium – Soil or Coco Coir and appropriate supplements
• Temperature and humidity control
• Nutrients
• Water with pH levels of 6 – 7 pH & for hydro 5.5 – 6.5 pH

How to Grow Weed in a Cannabis Grow Cabinet – Detailed Guide

Lighting

The more lighting you have, the better your plants will grow and ultimately bloom. Better lights also equal flower quality, so ultimately, grow lights are probably the most important factor when growing in a cannabis cabinet.

With a few options out there on the market when it comes to choosing grow lights, we recommend LED as it remains the leader in cannabis cultivation for it efficiency.

Grow Medium

Regardless of whether you’re growing weed in a cabinet or any other space, your growing medium options remain the same.

One of the popular options is to setup a small-scale hydroponic system. In terms of irrigation, it’s low maintenance, and you have better control over the growing medium.

Hydroponic marijuana also tends to grow faster than soil-based cousins.

When it comes to organic nutrients, these are generally more suited to soil growing. With organic soil feeding, the nutrients are slowly released every time you water the soil.

Whether you choose to grow hydroponically or in soil with additives such as perlite, vermiculite, bonemeal, etc, – doing in within a cabinet should serve all mediums right.

Ventilation

One of the most confusing aspects of setting up a marijuana closet is getting the ventilation system right. While it may seem confusing and time-consuming, it doesn’t necessarily need to be.

In general, you can achieve and maintain a balanced room temperature by simply opening up the windows or doors and allowing air to circulate freely.

A single oscillating fan will take care of airflow, while requiring minimal efforts. For cabinets, it is best to keep a desk fan or small circular fan inside.

For example, if you’re growing in a cabinet that measures 1m × 1m × 2m (with a total volume of 2m³), investing in an extractor fan isn’t a bad idea. 

The goal is to effectively maintain an optimal, consistent temperature in your indoor cabinet cannabis garden.

Temperature & Humidity Control

Excessively cold or hot temperature will stunt the growth of your precious plants.

Therefore, you should maintain the daytime temperature at 75 °F (25°C) while keeping night temperatures around 68-72°F (20-22.2 °C).

Whenever the temperature drops below 10 °F, it is likely to negatively affect the growth of the cannabis plants.

A central point of importance is that stable airflow will ensure consistent and strong growing of your plants.

Be sure to keep the humidity at 40% -50% to avoid bud rot. Also eliminate odors and ensure the airflow system is working correctly.

Lastly but certainly not least, remember that cleanliness is next to Godliness!

Nutrients

As a marijuana cabinet grower you need to make sure you consistently give your weed plants the right nutrients. The vegetative stage and flowering stage have their own nutrient requirements, respectively.

Good news though, there are many nutrient companies that make good products that suit the need of every marijuana grower out there.

To Wrap it Up…

A cannabis grow cabinet or stealth grow box as a self-contained box for growing plants indoors is ideally equipped with all the tools you need to grow cannabis safely and successfully inside the house. It eliminates the need to set up a growing space while providing safety.

The best cannabis grow cabinet is equipped with (LED) grow lights, fans, air pumps, meters, reservoirs, and of course the pots with high-genetic seeds planted in them! Hopefully by the time you’re done reading this article, you’ll have mastered how to grow weed in a cannabis grow cabinet. Happy cabinet growing!

Master Grower Certification

To learn much more about how to grow cannabis sign up for online cannabis training at the marijuana grow school. Become a master grower with your Cannabis Training University cannabis certifications.

Luis Cordova

Luis Cordova is a distinguished author, and renowned expert in cannabis cultivation, who possesses a Master’s degree in Plant Biotechnology and Pharmaceutical Science. As a valued contributor to highly esteemed publications such as Cannabis Training University and Maximum Yield Magazine, Luis has emerged as a trusted source of guidance and knowledge in the cannabis industry. Having written thousands of informative articles, Luis is widely recognized for his comprehensive expertise on cultivating cannabis, both indoors and outdoors.