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How to Grow Cannabis From Seed

How to Grow Cannabis From Seed

When it comes to growing cannabis, there are two sources to start with: clone and seed. Seeds carry genetic information from their parent plants, which in turn can produce many combinations of traits. Clones are made from the plant that is deemed to be the product and allows for mass production of consistent genetics. 

Seed can be purchased if cannabis is legal in your state, through dispensaries, or through online seed banks. The price ranges for packs of seeds but it is important to read labels or information on the seeds before purchasing to ensure you are getting the right strain for the plants that you wish to grow.


Germination is when a cannabis seed first sprouts out of the ground and grows its taproot into the soil. To begin this process, it will require a dark environment that is around 70 degrees. You can use the paper towel method, where the seeds are wrapped in a wet paper towel and kept in a dark and warm place. While there are many ways to germinate, you can sow your seeds directly into the soil as long as the soil is light and fluffy to allow the roots to grow down and the stalk can break through. 

The most important part of this process is ensuring that the environment is moist, as they will not germinate if the environment is too dry. If your climate is colder, a heat mat may help to increase your success in this process.


Once you have successfully germinated your seed and you begin to see a couple of leaves, you are ready to enter the seedling phase. The seed will develop into a baby plant and is extremely delicate at this stage. Sensitivity to heat and humidity, the seedling will need to be planted into its growing medium. It is important to be very gentle when transferring the seed so as not to damage it. 

Your hole should be roughly ¼ in deep. Place the seed gently into the hole, being careful not to damage the taproot, and cover it gently with soil. These seedlings should pop out in roughly 2 weeks, depending on how old the seed is.


When it comes to watering your cannabis plant, using bottled, distilled, or filtered water is recommended as there is no chlorine which can be damaging. If you are using tap water, you will need to either boil it for 20 minutes or let it sit out for 48 to 96 hours to dissipate any lingering chlorine.

Your plant should be watered with roughly one shot glass a week to keep your soil damp, but not drown it. Since seedlings are rather small, they do not require much water. Overwatering is just as deadly to your cannabis plant as drying out.


Cannabis seedlings need a specific amount of light to grow. Too little light and the plant will not have enough energy to grow. Too much light and the seedling may burn. Direct sunlight is not recommended for cannabis plants, as the leaves will curl, but if there is not enough, the seedling will stretch. If you are planning to grow inside, consider investing in proper lighting created just for cannabis plants.

While your seedlings begin to develop, air purification is vital to the health of your plant. At Airoclean420, we offer a state-of-the-art air purification device that eradicates airborne powdery mildew and other fungal diseases that are harmful to your plants. Our system is much more effective than HEPA filters and will allow your plants to flourish in a healthy environment. To learn more about how we can help you get started on your growing process, contact us today!

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