What You Need to Grow Cannabis Indoors

Get started on your indoor cannabis grow with this guide that covers everything you need to know, from equipment to set-up and more.

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The Basics of Growing Cannabis Indoors

To grow cannabis indoors, you will need a few supplies and to follow some simple instructions. First, you will need to purchase some quality cannabis seeds. You will also need grow lights, grow tents, ventilation, and nutrients. Once you have all of your supplies, you will need to set up your grow space and then start the germination process.

Deciding to Grow Cannabis Indoors

While you can grow cannabis outdoors in many places around the world, sometimes growing indoors is the only way to go. Maybe you don’t have the ideal outdoor growing conditions in your area. Or maybe you simply want to have more control over the entire growing process. Whatever your reasons, if you’ve decided to grow cannabis indoors, there are a few things you need to know before you get started.

One of the most important things to consider when growing cannabis indoors is the amount of space you have to work with. Cannabis plants can range in size from a few inches tall to several feet tall, depending on the strain and how it’s grown. If you don’t have a lot of space, you might want to consider growing a smaller strain of cannabis or investing in some vertical growing equipment.

You’ll also need to think about the amount of light your indoor grow space will get. Cannabis plants need a lot of light to grow properly, so if your grow space doesn’t get much natural light, you’ll need to supplement with artificial lighting. LED grow lights are a popular choice for indoor growers because they use less energy than other types of grow lights and produce very little heat.

Finally, you’ll need to make sure your indoor grow space has proper ventilation. Cannabis plants produce a lot of moisture as they grow, so if your grow space doesn’t have good ventilation, it can become moldy and damp. Good ventilation will also help keep the temperature and humidity levels in your grow space at optimal levels for cannabis growth.

The Pros and Cons of Growing Cannabis Indoors

Cannabis can be grown indoors in a variety of ways, each with its own set of pros and cons. Here are some of the most popular methods for growing cannabis indoors, along with the pros and cons of each method.

-Soil: Soil is the most popular medium for growing cannabis indoors. It is easy to find, easy to use, and easy to grow in. The main disadvantage of growing in soil is that it can be susceptible to pests and diseases.

-Hydroponics: Hydroponics is a method of growing plants in water instead of soil. The main advantage of hydroponics is that it is very efficient and can produce high yields. The main disadvantage of hydroponics is that it requires more equipment and knowledge than growing in soil.

-Aeroponics: Aeroponics is a method of growing plants in an airy environment without the use of soil or water. The main advantage of aeroponics is that it is very efficient and can produce high yields. The main disadvantage of aeroponics is that it requires more equipment and knowledge than growing in soil or hydroponics.

The Equipment You Need to Grow Cannabis Indoors

If you want to grow cannabis indoors, you need to make sure you have the proper equipment. You will need grow lights, a grow tent, an exhaust fan, an air purifier, and a humidifier. You will also need to get some soil and some plants. This guide will help you get started with growing cannabis indoors.

grow lights

Growing cannabis indoors requires specific grow lights that mimic the sun’s natural light. These are typically high-intensity discharge (HID) lights, which come in two varieties: metal halide (MH) and high pressure sodium (HPS). MH lights emit a blue spectrum of light, which is great for vegetative growth, while HPS lights emit an orange/red spectrum of light, which is ideal for flowering and fruiting. Many growers will use a combination of MH and HPS lights to get the best of both worlds.

In addition to grow lights, you’ll also need a way to ventilate your grow room to remove excess heat and humidity. An exhaust fan connected to ducting is the most common way to do this. You’ll also need a way to regulate the temperature and humidity in your grow room, which can be done with a combination of fans, dehumidifiers, and air conditioners.


Ventilation is critical for indoor cannabis growers. Your plants will produce a lot of moisture and heat, and you need to get rid of that moisture and heat to prevent problems like mold, mildew, and stressed plants. A good ventilation system will also help prevent strong smells from taking over your grow room.

There are a few different ways to ventilate your grow room:

-Passive ventilation: This is the simplest and most common type of ventilation for small grow operations. You can set up passive ventilation by opening a window or door to let fresh air in and installing an exhaust fan to get rid of hot, humid air.

-Active ventilation: Active ventilation is more effective than passive ventilation, but it requires more equipment and effort. With active ventilation, you use fans to push air in and out of your grow room. This type of ventilation is especially important if you’re growing in a sealed space like a closet or cabinet.

-Hybrid ventilation: Hybrid ventilation is a combination of passive and active ventilation. The goal with hybrid ventilation is to create a constant flow of fresh air in your grow room without using too much energy or making too much noise.

pots or containers

One of the most important pieces of equipment you need to grow cannabis indoors is a pot or container. The size of the pot will depend on how large you want your plant to grow. A general rule of thumb is that a 12-inch pot will allow your plant to grow to about 3 feet tall. If you want your plant to grow taller, you will need a larger pot.

In addition to the pots or containers, you will also need a growing medium. The most common growing mediums used for indoor cannabis cultivation are soil, coco coir, and hydro. Soil is the most traditional and easy to use growing medium, but it does have some downsides. Coco coir is a more modern growing medium that has many benefits, but it can be more expensive than soil. Hydro is the most complicated and expensive option, but it can produce the best results.

You will also need some type of lighting system to grow cannabis indoors. The most common lighting systems used are fluorescent lights, LED lights, and HID lights. Fluorescent lights are the least expensive option, but they are not as effective as LED or HID lights. LED lights are more expensive than fluorescent lights, but they are much more energy efficient and will last longer. HID lights are the most expensive option, but they produce the most light and heat, which can be beneficial for plants that need a lot of light (like cannabis).

Finally, you will need some kind of ventilation system to grow cannabis indoors. The most common type of ventilation system is an exhaust fan that pulls air out of the room where your plants are located. This helps to keep the air in your room from getting too humid and prevents mold and mildew from forming on your plants.

soil or hydroponic system

Which is better for growing cannabis, soil or hydro? The short answer is: it depends. Each grower has to experiment and find what works best for them. Here are some things to consider when making your decision.

Soil: Pros
-Cheap and easy to find
-Adds organic matter to the grow environment
-Can be used over and over again
-Retains water well

Soil: Cons
-Can harbor pests and diseases
-Doesn’t drain excess water well, leading to root problems
-Can contain salts that can build up and harm plants
– nutrients can be depleted quickly, necessitating frequent fertilization

Hydroponic: Pros
-Faster growth rates possible due to nutrient availability
-No need to worry about soil-borne pests and diseases
-Allows for better control of the plant environment

Hydroponic: Cons
-More expensive to set up initially
-Requires more attention and knowledge to do successfully

water and nutrients

To grow cannabis successfully, you will need to provide your plants with water and nutrients on a regular basis. Depending on the size of your grow operation, you may need to purchase a water pumping system and/or nutrient solution. You will also need to add some type of lighting to your grow room in order to encourage photosynthesis. Finally, you will need to provide adequate ventilation to remove any excess heat or moisture that could damage your plants.

temperature and humidity control

Cannabis plants need a stable temperature and humidity level to thrive indoors.Monitoring and regulating these levels can be done in a number of ways, but the most common and effective method is to use an air conditioner, dehumidifier, and fan.

An air conditioner will help to keep the temperatures stable and consistent, while a dehumidifier will remove excess moisture from the air. A fan is also necessary to circulate the air and help evenly distribute heat and humidity.

In addition to temperature and humidity control, you will also need to provide your plants with adequate ventilation. Poor ventilation can lead to a buildup of dangerous toxins and fumes, so it’s important to make sure your grow room has plenty of fresh air.

You can ventilate your grow room by installing an exhaust fan and ducting system, or by opening windows and doors on a regular basis. Whichever method you choose, just be sure that you’re providing enough fresh air for your plants to thrive.

The Process of Growing Cannabis Indoors

Growing cannabis indoors is a great way to control the environment and ensure a high-quality crop. But before you get started, there are a few things you need to know and do. This guide will walk you through everything you need to get started growing cannabis indoors.

Germinating Your Seeds

The first step to growing your own cannabis plants is germinating the seeds. For best results, we recommend using the Paper Towel Method.

You will need:
-A plate
-A couple of sheets of kitchen roll/paper towels
-Some cannabis seeds

1. Firstly, take your plate and line it with a single layer of paper towel.
2. Next, soak the paper towel in water until it is thoroughly saturated but not dripping wet.
3. Place your cannabis seeds on the wet paper towel, making sure that they are not touching each other.
4. Then, fold the paper towel over so that it covers the seeds completely.
5. Finally, place another plate on top of the paper towel ‘sandwich’, inverted so that the bottom of the top plate is facing upwards. This will create a dark and humid environment for your seeds to germinate in.

Leave your setup in a warm place (around 21-26°C is ideal) and check on it daily to make sure that the paper towels are still moist – if they start to dry out, simply mist them with a spray bottle filled with water. After a few days, you should see tiny taproots beginning to emerge from the seeds – at this point, they are ready to be transplanted into their grow medium

Planting and Transplanting

Cannabis is typically transplanted once or twice before it goes into flowering. For optimal results, transplant into slightly larger pots each time. Be sure to water thoroughly after transplanting, and give the plants a few days to recover before continuing to grow them.

To transplant, first soak your new pots in water for 20-30 minutes. This will help prevent the roots from drying out when you transfer them. Next, gently remove the plant from its current pot and loosen the root ball with your fingers. Place the plant in the new pot and fill in around it with fresh soil. Water thoroughly and place in a lighted area.

Growing, Topping, and Fimming

Topping and Fimming are two different ways of manipulating the growth of a cannabis plant. Topping is when you cut off the main stem of a plant just above a node. This causes the plant to grow 2 new main stems from that node. Fimming is when you cut off a small piece of the main stem, about 1/3 of the way down, also just above a node. With both topping and fimming, you are essentially increasing the number of main colas (tops) that the plant will produce.

Topping is most often done early on in the vegetative stage, usually after 4-6 weeks, while fimming can be done throughout the vegetative stage and even into flowering. The general rule of thumb is that you can top or fim a plant once it has grown 6 nodes.

Both topping and fimming will stunt the growth of the plant for a couple days while it recovers from being cut. After it has recovered, however, you will see an explosion in growth as the plant tries to compensate for what was lost. This is why topping and fimming are often used to control the size of a plant; By increasing the number of main colas, you are effectively decreasing the size of each individual cola.

Topping and fimming are also used to increase yield. By increasing the number of main colas, you are also increasing the number of sites where buds can form. This means more buds, and more potential yield!


The flowering stage is when the female cannabis plant begins to produce flowers/buds. Flowering is induced by a change in the ratio of light to dark hours (photoperiod). When growing cannabis indoors, this change is created by the grower. Outdoors, the changing seasons trigger the plant to flower.

The flowering stage begins when the plant receives 12 hours of uninterrupted darkness and 12 hours of light. The flowering stage can last anywhere from 6 to 14 weeks, depending on the strain.

During the flowering stage, you will see pistils (hairs) shooting out from the buds and Leaves will begin to grow more compact. Trichomes (THC glands) will also begin to form on the surface of the buds and leaves.

It is during this stage that growers must be vigilant in their control of pests and diseases as the buds are very attractive to creatures that would like to make a meal out of them!


After 3-4 months of methodically taking care of your cannabis plants, it’s finally time to harvest them. Depending on the strain, indoor cannabis plants usually finish flowering around day 60-70 of a 12/12 light cycle. But how do you know when your plants are ready for harvest?

The best way to tell if your plant is ready for harvest is by examining the trichomes—the tiny, hair-like crystals that cover the plant. You can do this by using a loupe or magnifying glass to get a close look at the trichomes. They should be milky white with amber tips, as pictured below. If they’re all clear or all amber, your plant is not quite ready yet.

Curing and Storing Your Cannabis

Growing your own cannabis can be a rewarding experience, but it takes some work to get started. One of the most important things you will need to do is cure and store your cannabis properly. This will ensure that your cannabis stays fresh and potent for a long time.


After you’ve trimmed and dried your cannabis, it’s time to cure it. Curing is the process of allowing the buds to slowly dry over a period of time, typically 2-4 weeks. This allows the plant’s chlorophyll to break down and for the flavors and aromas to develop more fully.

Curing isessential to achieving high-quality cannabis. If you do not cure your buds, they will likely be harsh, low-potency, and low-quality. The curing process also helps to prevent mold and mildew from developing on your buds.

To cure your cannabis, you will need:

-A large glass jar with a tight-fitting lid
-A small bowl or container
-A kitchen scale
-Cannabis buds

To begin, trim your buds if they are not already trimmed. Next, weigh out your buds on the kitchen scale and record the weight. Then, place the buds in the glass jar, seal the jar tightly, and place it in a cool, dark location such as a closet or cabinet. Every day for 2-4 weeks, open the jar for 1-2 minutes to allow fresh air to circulate and prevent mold from developing. Be sure to check your buds regularly during the curing process and remove any that show signs of mold or mildew. When cured properly, your cannabis should be dry yet pliable with a strong aroma. It can then be stored in the sealed jar in a cool, dark location for up to 6 months.


Storing your cannabis is just as important as the curing process. You want to store your weed in a cool, dark, and dry place. The ideal storage temperature is between 59-64°F (15-18°C) with a humidity level of 62-65%. If your home doesn’t meet these standards, you can always invest in a cannabis humidor.

Cannabis humidors maintain the perfect humidity and temperature levels for storing your weed. They’re also great for keeping your weed out of sight and smell! When it comes to storing your cannabis, airtight containers are key. This will help keep your weed fresh for longer periods of time. Popular airtight storage solutions include glass jars, Tupperware, or mylar bags.

If you plan on storing your weed for long periods of time, it’s important to check on it every so often. Make sure that the lid is still tight and that the container hasn’t been damaged in any way. It’s also a good idea to check the humidity levels to see if they’re still within the ideal range.

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