How to grow Marijuana Indoor, a Beginner’s Guide

The cannabis plant is a genus of flowering plant in the family Cannabaceae from which Marijuana also known as weed is made. with many slangs like herb, pot, grass, bud, ganja and Mary Jane, Marijuana is basically a greenish-gray mixture of the dried, shredded leaves and flowers of Cannabis sativa, the hemp plant. Since its discovery, Marijuana has been used for spiritual, recreational and even medical purposes.

Common Uses of Marijuana

For Recreational Purposes

When used for recreational purposes, Marijuana is usually smoked in pipes (also called bongs), hand-rolled cigarettes called joints or cigars made by slicing open cigars and replacing some or all of the tobacco with marijuana, these are called blunts. Most users associate the use of marijuana with feelings of relaxation and euphoria.

For Medical Purpose

Despite having no agreed definition, medical marijuana can be defined as the use of marijuana to treat diseases or alleviate symptoms. There is now some evidence to support that medical use of marijuana can

  • reduce nausea and vomiting during chemotherapy
  • improve appetite in people with HIV/AIDS
  • treat chronic pain and muscle spasms

When sold or consumed for medical purpose, Marijuana can be used to brew tea or even mixed into foods such as brownies, cookies or candies.

For Spiritual Purpose

Holding a sacred value in some religions the association of marijuana with religious beliefs dates back around 1500 BCE in India. Termed as the drug that eliminates anguish and sorrow, marijuana has been a chemical substance used in religious context for a lot of centuries.  Concentrated resins containing high doses of THC(tetrahydrocannabinol), which is the main psychoactive part of cannabis and sinsemilla (extracted from special female plants) constitute strong forms of marijuana and are increasingly being used for both recreational and medical purposes.

How to grow Marijuana indoor, a beginner’s guide.

if you are still quite a newbie when it comes to growing your own high-quality marijuana from indoors, the process can seem challenging. However, the reality is that the process isn’t that complicated and with a few guidelines, you should be harvesting your own weed in no time!

Below is a full guide on how to grow marijuana from start to finish,

Guide Contents


Step 1: Select Your Place to Grow

Step 2: Select Your Light

Step 3: Select Your Growing Medium

Step 4: Get Cannabis-Friendly Nutrients

Step 5: Getting Cannabis Plants

Step 6: Germinating Your Seeds / Starting Your Clones

Step 7: The Vegetative Stage

Step 8: The Flowering Stage

Step 9: The Harvesting process

Step 10: Dry and Cure Your Buds Professionally


As a beginner, it is a good idea to start with 2- 6 plants of 6-9 sq. ft. then increase with experience. Growing marijuana is not complicated at all and if it seems that way, it is usually an indication that you have inaccurate information on cannabis growing.  Although essential steps for marijuana growing remain the same, the growing style may change due to,

  • Your growing space
  • Your desired yields
  • Your budget

What Cannabis requires to survive.

For you to harvest a perfect and fully matured cannabis plant, there are important things that each cannabis plant requires. These are,

  • Great Lighting system
  • Growing Medium
  • Constant supply of Air
  • Optimum Temperature
  • Required Nutrients
  • Water supply

Whether you are growing cannabis indoors or outdoors, you will need to ensure that it gets the proper amount of all 6 of these resources.

How long does it take to grow Cannabis plant?

Indoor growing of marijuana tends to take a short while to fully mature compared to the outdoor growing of marijuana. This is because the growing environment can be controlled when grown indoor. Growing indoors means that you could be smoking your own grown marijuana in about 8.5 weeks. With other important stages such as harvesting and curing, it can take a grower about 4 months.

Common mistakes made by many Cannabis growing first-timers

  1. Making a fast decision in growing cannabis plant is one of the mistakes most beginners make. Before you implement an idea/experiment with your cannabis plant, google the idea first just to be sure it doesn’t harm or hurt your plant.
  2. It is a good idea to follow all important steps including setting the right conditions like lighting, and root PH levels to ensure you are getting a strong and healthy marijuana harvest.

Step 1: Select Your Place to Grow

There are two common ways that you can use to grow your own Marijuana. These options are,

  • Outdoor growing and
  • Indoor growing

For outdoor weed growing, you obviously need land and irrigations system depending on where you live. You won’t need lighting because of the natural light provided by the sun. This method, however, requires more time before the cannabis are fully grown and ready for harvest compared to indoor growing.

For indoor growing of weed, you can use,

  • Grow box
  • Grow tent
  • a spare room
  • a closet
  • garage
  • extra bathroom

Are Grow boxes for you?

Grow boxes can be applicable in many situations especially when outdoor gardening isn’t an option for you. Grow boxes will perfectly suit your needs,

  • if you lack outdoor growing space.
  • If you want to grow weed, vegetables or flowers during cold months or winter.
  • If you don’t want house visitors, or neighbors to know everything you grow.
  • If you are quite busy because this system can be operated automatically.
  • If you want fast yield compared to outdoor gardening

These are used to provide adequate light, heat, air and other conditions favorable for the marijuana to fully mature faster. By creating a self-contained indoor growing space that allows you to create the perfect environment for strong, healthy cannabis plant, you can be sure of a fast, reliable and recurring harvest. You can also use this method if growing outdoor isn’t an option for you which offers you discrete gardening experience.

Things to note here;

  • Cannabis grows faster in warmer climate/temperature around 70-85°F (20-30°C).
  • During the budding stage/ flowering stage, it is best if you keep the temperatures a bit cooler around 65-80°F (18-26°C) to ensures that the buds have the best color, trichome, and smell.
  • In addition to your exhaust system, you might want to install an air conditioner to automatically adjust the room temperature to suitable limits.
  • Growing outdoors may seem a bit cheaper at this point but you will still have to worry about privacy/stealth, possible pollination, people stealing your plants, bugs, deer and other unexpected outdoor visitors.

Step 2: Select Your Light

Since light sources produce both heat and light. It is important to strike a good balance between the two. When buying lights, it is important to ensure that the lighting is not too much or too small for the size of your growing space. There are many of lighting systems that you can choose from for your indoor cannabis growing. This include,

  • Compact Fluorescent Light bulbs (CFLs)
  • Other Fluorescent Lighting (T5 / T8)
  • LED grow lights
  • Metal Halide (MH)
  • High-Pressure Sodium (HPS)

Compared to the rest, light emitting diode (LED) is the best when it comes to low power consumption.

Compact Fluorescent Light bulbs (CFLs)

Compact Fluorescent Light bulbs (CFLs) are more commonly used by indoor marijuana beginners. This is because CFLs are cheaper and easy to get a hold of compared to other types of lighting.

Other Fluorescent Lighting (T5 / T8)

Since other Fluorescent Lightings (T5 / T8) are mostly used for plants that don’t require much lighting like marijuana, it is recommended that you use a High-Output T5 type because they are brighter compared to others In this group.

LED grow lights

Although more powerful and bright, LEDs are quite expensive compared to CFLs. Since the emissions from each LED lighting system are different, it might be a good idea to purchase LEDs light for your indoor gardening from an established company that makes LEDs specifically for growing cannabis plant. How ever, the benefit of using LEDs is that they consume very low power.

Metal Halide (MH) and High-pressure Sodium (HPS)

Metal Halide (MH) and High-pressure Sodium (HPS) are the standards when it comes to indoor marijuana growing. Most professional growers also use this. They are very powerful in terms of the light intensity emitted but still reasonably priced. If you are a beginner, you might want to start with a simpler lighting system especially if you have fewer plants as long as the total lighting is enough for the plants. These are because Metal Halide (MH) and High-pressure Sodium (HPS) lights consume a lot of wattage and might considerably increase your electric bill.

Step 3: Select Your Growing Medium

Selecting a suitable growing medium is essential and will determine the amount of water and care you will need for your plants. There are various growing mediums you can choose from. These include,

  • Soil – if you decide to go with this option, it is a good idea to start with the popular Fox Farms Ocean Forest soil mix, since it already contains all important nutrients
  • Soilless Mix – this includes all other mixtures that can be used that do not contain actual soil. Examples are coco coir, perlite, vermiculite, etc
  • Directly in Water / Hydroponics – when hydroponics system is combined with HID grow lights, it can help you get very fast yield at high quality. Many pros use a top-fed DWC system

Things to note

  • the best soil option is to compost your own soil (or purchase composted soil)
  • if you prefer pre- made mixes then Fox Farms Ocean Forest soil (often referred to as FFOF) will be the best for you.
  • Another option will be to use organic potting mix, which can come in many forms, however below are some of the available options on the market to-date.
  • Fox Farms Ocean Forest Soil (best)
  • Black Gold All Organic Potting Soil (good)
  • Espoma Organic Potting Mix (okay)
  • Miracle-Gro Organic Choice Potting Mix (worst in comparison)

You might also want to pick up a bag of perlite at your local store. It looks like white rocks and should help the soil drain better. It should also be mixed so that you have 70% soil and 30% perlite.

Step 4: Get Marijuana-appropriate Nutrients

The nutrients that are best for you will depend on the type of growing medium you select for use,

  • Soil – if you choose this option, then you will probably need to add cannabis-appropriate nutrients unless you are using Super soil. In case you started with FFOF, then you should add more nutrients once you reach the budding stage.
  • Soilless & Hydroponic growers – if you are using other growing mediums, then get cannabis nutrients specifically made for hydroponics. A good example of this is General Hydroponics Nutrient Trio.

Things to note

  • Especially for a beginner in marijuana growing, a good nutrients recommendation will be Dyna-Gro (Grow, Bloom) which can be found on Amazon.
  • Use this if you are using the hydroponic system
  • Use the ‘grow’ during the vegetative stage and ‘bloom’ bottle during the flowering stage
  • Do not over dose the plants as you could risk burning the plant
  • It’s a clever idea to also ensure that your water hardness is about 200-300 PPM (parts per millions) of extra stuff. If you are worried about the quality of your tap water, you can choose to use purified or Reverse Osmosis (RO) water, but you may then need to add extra Cal-Mag and possibly a few other supplements to help make up for the random minerals and nutrients that are normally found in tap water
  • Maintain and regularly check the PH of the soil or hydroponics to ensure it is at
  • Soil: Maintain 6.0 – 7.0 pH
  • Hydroponics: Maintain 5.5 – 6.5 pH

Step 5: Getting Cannabis Plants

It may be easy to get cannabis plant clone or seeds in case you know someone who is already a grower or buy it from dispensary close to you. A great advantage of purchasing clones or seeds from a trusted source is that you know you can trust the genetics you are receiving. If you don’t know anyone who is already a grower in real life then it might be a good idea to order seeds online.

Things to note

  • Order the seeds from a reputable seed bank/ site
  • Check with the laws in your country. In the US, example, no one has ever been arrested for ordering cannabis seeds online as long as it is from a location outside the USA. NOT within.

Step 6: Germinating Your Seeds / Starting Your Clones

If you used a clone, then you can skip to the next step. When it comes to germinating, there are many ways which you can do it. However, most growers can agree that using a specialized starter cube like a Rapid Rooter is the easiest and fastest method.

Another popular method for germination is the paper towel method. This requires you to have,

  • Cannabis seeds
  • 2 plates
  • Paper towels
  • Water
  • A place to plant sprouted seeds

Things to note

  • Place the seeds on the moistened paper towel and cover them with the plates
  • Check regularly to see if the seeds have started sprouting/germinating
  • After 1 -4 days and up to a week sometimes, the seeds will have germinated
  • Place the root of the sprouted seed into the paper towel and supply lighting by CFLs 24/7.
  • Compact fluorescent lights should be placed at 2-6 inches.



Step 7: The Vegetative Stage

The start of the vegetative stage is marked once your plant grows its first set of leaves. Usually, cannabis plant will keep getting bigger and bigger with long days (vegetative stage), and start making buds when they get long nights (flowering stage).

Things to note

  • It is a good thing to maintain the temperature around 70-85°F (20-30°C).
  • Unless the plant has shown signs of nutrients deficiency, just keep half to ¾ strength supply of nutrients to the plant.
  • If lower leaves are turning lime green, then yellow, then falling off – this is the first sign of a nitrogen deficiency.
  • Since the plants are focusing on growing strong at this stage, provide 18 to 24 hours of light per day.

Step 8: The Flowering Stage

During the flowering stage, your cannabis plants will start making buds. It is an important step as it will last until harvest.

Things to note;

  • Identify the gender of the cannabis plants and get rid of any males.
  • Change the light schedule to 12 hours.
  • Ensure that the cannabis also get 12-hours of uninterrupted darkness
  • To produce good buds having the best color, keep the temperature around 65-80°F (18-26°C)

Many growers prefer using clones as they can be sure they are getting females only since most common seeds are half male and half female and while males produce pollen, they can’t be used for smoking. Female plants will start growing white wispy hairs (pistils) which is a good sign that the beautiful weed with buds/flowers/ganja that you can smoke will develop soon.



Step 9: The Harvesting Process

Although quite a very exciting stage, it is important to know how to check if your weed is ready for harvest.

Things to note

  • With a strong cannabis smell filling the room, you should also wait until the buds stop growing new white hairs.
  • The beginning of harvest is marked by the changing of the color of the white hairs. They will adapt a more darkened state.
  • For the highest THC(the psychoactive component of marijuana) harvest when 50%- 70% of the white hairs have darkened.
  • For a more couch lock or anti-anxiety effect, harvest when 80% – 90% of the white hairs have darkened. This happens because some of the THC has turned into the more relaxing CBN.

Step 10: Dry and Cure Your Buds Professionally

Drying out your buds after harvesting is a very crucial step. After harvesting it is a good idea to hang the buds upside down so that they can dry properly in a cool and dark place having plenty of ventilation.

Things to note

  • Avoid over drying and check for any sign of mold infestation.

Curingthis process involves treating your buds once they are already dried so that they’re smooth, taste good, smell good, and have the best effects.

Things to note

  • During curing, place the buds in a tight jar and fill it with water to about ¾
  • In the first 2 weeks of curing, open the jar just once to allow fresh air and release the moisture build up
  • Since Moist buds are what causes mold infestation, always check If your buds feel moist and if so, leave the tops of the jars off until the outsides of the buds feel dry to the touch.
  • You can also use products such as Boveda 62% Humidipaks that will regulate the humidity in your jars to make curing a lot easier.
  • After 2 weeks of curing have passed, you can start opening the lid once a week instead of once a day

While some cure the buds for just 2 weeks, most people cure them up to 30 days. However, curing your buds for more than 6 months won’t do you any good as most of the THC turns to CBN. To store your buds for a long time, keep them in an air tight environment/condition.


Especially if you are a beginner, it might be challenging to know the exact time to harvest your weed. Some people use more advanced methods to know when to harvest the buds such as trichomes. However, once you do a couple of harvests, this shouldn’t be a problem. It is also a good idea to the source if you can, anyone that is already growing cannabis for more tips and tricks. And of cause remember to always research ideas if you have before implementing them on your indoor garden. This is because there is a high probability that someone has done it before and can help you shade more light on it and even possibly save your weed! For any questions, please don’t hesitate to write or call us today. Happy growing!

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