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how to grow marijuana in a closet

Everything I Used to Grow Two Cannabis Plants in My Closet

If you smoke a lot of weed, growing your own cannabis plants is a great way to save money on bud while learning essential skills for self-sufficient stoners. Last year, my husband and I decided to try growing two weed plants in the closet of our spare bedroom, partially as a learning experience but mostly to see if we could actually turn some old Northern Lights seeds into something smokeable. Spoiler alert: it worked!

This list includes everything we used to successfully grow two marijuana plants in the closet. If you have more space you can definitely do more than 2 plants, but as our first grow we wanted to keep things simple.

First things first: We used the Cannabis Grow Bible to walk us through the indoor growing process. Let’s just say “Bible” is an appropriate word for this book because it was a godsend and probably the main reason our plants yielded us any weed at all. This book walks you through every phase and digs deep into every detail of the process, so you know exactly what to prepare for as your plants grow and their needs change. If you read the whole thing you’ll have a botany degree when you finish, it’s that good. There are many variations of this book out there, as well as plenty of free blog posts and ebooks on how people grow their weed, so you might find one that works better for you than the grow bible, but I highly recommend having something like this on hand so you can learn as you go.

One reason we wanted to grow our own weed is because of the Northern Lights seeds we had from a friend. If you don’t already have seeds on hand, you can buy cannabis seeds online through Seedsman. They sell regular, feminized, and auto-flowering seeds from 80+ breeders around the world, so it’s likely they’ll have seeds available for your favorite strain.

Growing Medium

We chose soil for our growing medium over hydroponics because it required less of an investment to set up. We used a Foxfarms soil and perlite blend.

The seeds started off in a seedling domed nursery in front of a sunny window to make sure they would sprout. From there, we transferred them into the solo cups for a little more space before moving them into 3-gallon fabric pots filled with the perlite soil, which were then placed in the large plastic storage bin. The plants stayed in the fabric pots for the remainder of the grow.

We insulated the bin using Mylar sheets and a spray adhesive to cover the interior sides.

Lighting

We added some LED strip lights to the bin to keep light reaching under the leaves. These are the lights surrounding the small plants in the pictures. We ended up keeping them in there for the full length of the grow.

Once the plants outgrew the strip lights, we used this 600W LED grow light and an adjustable hanging system to hang the lamp from the closet rack.

We also made it very easy on ourselves with these mechanical outlet timers for when the plants started to flower. In this stage, your plants will require 12 hours of light and 12 hours of complete darkness, so if you use outlet timers to automate this process, you won’t have to worry about getting too high to remember to turn off the light.

Airflow / Odor Control

We regulated airflow with (4) 120mm computer fans and a 12 volt molex adapter, which can power up to 5 fans at a time. You can see where the fans were placed in holes cut into the side of the bin.

Once the plants get a little bigger, this 4″ inline centrifugal fan will keep the space breezy without too much noise. Attach it to this 4″ flexible dryer vent tubing.

This 4″x18″ carbon filter will keep your landlord’s nose out of your business. If that’s not enough, we also used this HEPA air purifier, which is worth every penny and a life-saver if you need to quickly get the smell under control.

Temperature Control

We kept this temperature controller on the outside of the door so we could check the temperature at a glance.

This humidity and temperature gauge sat right inside the bin. It measures indoor temperatures and humidity every 10 seconds and has an alarm if anything goes off balance.

We also kept a small oscillating fan and ultrasonic humidifier going most of the time to help with airflow and humidity.

Water / Nutrients

This auto-drip irrigation pump and tubing system can be programmed to water your plants at whatever schedule you set, which is a must-have if you want to go away for the weekend.

The plants were fed using Fox Farm liquid nutrients and we just followed the directions on the bottle to determine what amount to feed them.

Make sure you have some nice pruning shears for trimming the leaves when the brush starts to get thick. Throw the leaves in a salad or smoothie for some tasty nutrition, or give them to your pets if they like leafy greens. My cats eat pot leaves like it’s catnip.

It took about 4 months for the plants to get to a point where we were ready to trim the buds and hang them to dry. We dried the stems on clothes hangers for about a week and a half before trimming the buds, then finally performed the ultimate test of smoking our first homegrown bowl of weed. We actually forgot to weigh the final product to see how much we grew, but we got high and we’re still smoking it months later so I’m going to call that a win.

For your home grow, remember that your first attempt is a big learning experience and that the amount of weed you’ll grow can vary significantly depending on your care methods, the seeds you choose, and the strain. Once you buy your setup and learn the process, you can expect to get more quantity and potency from your plants.

Growing weed indoors can be a fun and fruitful experience if you smoke a lot of herb. Here's everything I used to grow 2 cannabis plants in my closet.

How To Grow Weed In Your Closet – A Step By Step Guide

Growing Marijuana In A Closet Or Bedroom Is Not Hard

So you want to grow weed in your closet?

Follow our expert tips on help you grow some good weed indoors.

You can grow top-shelf ganja right from your home – save yourself some greens or use that money to buy some kickass marijuana paraphernalia. Growing weed indoors is becoming more popular today, and if you do it right, you can even produce strains that are at par, or even better, than what you can buy at a dispensary.

 As you get started, keep in mind that the variety of seeds you choose plays a crucial role. Until you already have a mother plant, it’s best to grow straight from the seed to ensure that you are preserving good genetics for your future grows.

 Before you buy a seed, know first if you want to choose a sativa or indica strain. It’s recommended to start with feminized seeds which have been chemically treated to grow female plants so that you don’t have to worry about tossing the male plants and sexing them later on. Auto-flowering cannabis seeds are also another great choice for indoor growing since they are not as light-dependent as other varieties. No matter how much light you give these seeds they will flower after some time. However the plants that grow from auto-flowering seeds tend to be smaller so these are ideal if have a small grow space.

 Not everyone has the luxury of a large grow area in their homes. But even if all you have is closet space, guess what, there’s hope for you too! All you need is a grow tent or grow box, which come in many different sizes to accommodate the growth of a single plant and more. Grow boxes usually come equipped with their own hydroponic and light system already set up.

Growing marijuana in soil or good quality compost is also an option, if you don’t want to use hydroponics or don’t have the budget to do so. Growing in soil is a basic but effective way of growing marijuana, even indoors. It’s simple, easy to do, and environmentally sustainable.

If you are using hydroponics, it’s necessary to monitor the pH level of the water. Most tap water is acidic or alkaline; what you are looking for is a neutral pH. You can also neutralize the water by letting it stand for three days before using it.

You’ll need powerful artificial lights that are meant to imitate the sun. Commonly used lights are the HPS (High Pressure Sodium) although other kinds of lights such as LED, metal halide, and fluorescent lights can also be used. Cannabis is a light-loving plant so it’s in your best interest to expose it to as much light as possible especially since you’re growing it indoors. You can start with 250 watts/m² although ideally it should be three times as much if you can. Superior yields with top-quality dense buds depend largely on adequate light exposure.

 Successful indoor growing also means that you don’t just give your plants lots of light, but also keep them near the light. This is important so that more light reaches both buds and leaves. To maximize your growing conditions, it’s best to have a 400W or 600W HPS lamp over a 2 m² growing area.

Make sure that the plant isn’t too near the light that it actually gets damaged since the light is pretty hot. Use the back of your hand to check if the light is cool or warm – whatever temperature you feel will also be felt by the plant. A good gauge is to keep a distance of around 40 to 50cm between the plant and the bulb. If your marijuana plants grow very tall you can bend and tie them.

The ideal temperature for growing cannabis plants is around 21.1°C – 28.3°C, although it can tolerate temperatures of 17°C – 33°C. It’s important to make sure that your plants always have adequate air supply which is necessary for them to grow properly so you may want to consider a ventilation system. There is also the option of adding carbon dioxide in your grow room which is effective in increasing the overall yield. But if you are a budding grower and only have a small grow room, additional CO2 might not be worth the added expense.

 Cannabis plants do smell, but if you want to mask the odor of your grow (especially if you’re cultivating some dank stuff!) there are options. You can choose from a variety of ozone generators, ionizers, and carbon filters – these are all useful when it comes to cleansing the air before it leaves your grow room. (Tip: If you are working in your grow area, change your clothes before you head out, especially if you are reporting to the office! Marijuana odors can cling to your clothes for a couple more hours after exposure.)

 During the first weeks of life, seedlings can grow well even with low light intensity.

Artificial lights are typicall switched on for 18 up to 24 hours a day. The seedlings will grow roots, branches, and leaves but won’t bear any bud yet. Once you reduce the light exposure to less than 12 hours per day, your marijuana plant will begin “flowering”. This usually occurs around 8-10 weeks although it can easily be more for other strains.

During the flowering phase, the female flowers are formed and visible. The plants become bulkier and will require more nutrients and bright light. During the flowering phase, you may want to consider using supplemental lighting to ensure that you get a better yield.

 When the flowering process is finished, you can cut the marijuana plant down and dry the buds. It depends on you though – some tokers prefer buds that have been harvested early, while others prefer those that have been harvested late.

Have you grown weed indoors? Share your tips and tricks with us in the comments below.

You can grow top-shelf ganja right from your home – save yourself some greens or use that money to buy some kickass marijuana paraphernalia.