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If you want to start to grow your own plant, the first thing that you should know is how to pant and germinate marijuana seeds. Surely you have seen a few different ways to do it, and would like to compare some different methods.

In this article, we will expose of the key points that you should keep in mind, as well as a few methods so that you can compare and choose a method according to what seems comfortable to you, the conditions of your grow space, and the results that you want to obtain.

To begin with, its important to have quality cannabis seeds. At Ripper Seeds we know that the raw material is the most important and for that reason, we follow rigorous guidelines of conservation and restocking so that you can have fresh seeds in the best condition and are able to germinate successfully following the proper steps. Whether you want to plant regular marijuana seeds, feminized seeds, autoflowering seeds or CBD seeds; it’s vital to take a great deal of care during the germination process, since these are the first days in the life of your plant.


Semilla de marihuana



The first step to germinate marijuana seeds is to obtain all basic materials:

  • Seeds
  • A glass of water
  • Tweezers
  • Medium for germinating (to be chosen):
  • Paper towels
  • Jiffy peat pellets or coconut fiber
  • A block of rockwool
  • Root it seedbed or other seedbed
  • Greenhouse or recipient with a lid
  • Final pot




The 3 star elements that we need to combine perfectly are:


  • LIGHT: For the first few days of the germination process, it is advisable to keep the marijuana seeds in a dark place, inside of a closet or dark room. The moment that we make the change to our germinating medium and then final pot, is the moment that we expose the plant to the greatest amount of possible light. The leaves will begin opening and will function as a solar panel that absorbs this light as an energy source. Given this information, it is recommendable to give the plants some 18 hours of light and 6 hours of darkness, as we would find on a long summer day.


  • TEMPERATURE: Between 20 and 25Cº. The tropical climate is ideal for a cannabis plant, and so we should simulate this by combining temperature and humidity. We can achieve this temperature in a variety of ways. If the current season of the year happens to coincide with this temperature, perfect, although we advise you to make sure you are controlling the possible differences in temperature between day and night. During any time of the year, you can grow marijuana indoors and provide the ideal temperature for the space with a heated greenhouse. At Ripper Seeds we will advise you about the different options that you have according to your space and what might work best.


  • WATER: Water should have a PH around 6.5. Distilled water or reverse osmosis water works perfectly. Sometimes growers add a few drops of carbon dioxide in order to prevent the possible growth of fungus and to provide more oxygen. It’s important that there is enough water but also that there isn’t too much. With a lack of water, our seed and plant will dry up, and with an excess of water the marijuana seed can become rotten or mold.




During this breakdown you will see that there are several ways to germinate cannabis seeds and that we can combine different methods. We recommend that you not touch the seeds with your hands, and instead to use tweezers to manipulate them.




In order for the marijuana seed to grow their first roots, we need to choose between two starter methods:


  • Water germination method: Put the seeds in a glass or recipient full of water with a temperature between 22-26Cº, where they can re-hydrate. Leave them there for 1 or 2 days until you see that the white point of the root has emerged around 2 or 3 mm.


  • Germination method with napkins or paper towels: Take a plate or recipient and put down a bed of paper with two sides. You can also use cotton. Wet the paper, without soaking the plate. If it drips, remove the excess water by tipping the plate. Above this bed of wet paper, place the seeds that you want to plant and cover them again with another double layer of paper towel. Wet it in the same way, without excess water. Cover the recipient with a lid in order to maintain humidity, but leave a hole or space so that it can breathe and so that air can enter. Wait 2 to 5 days until all of the seeds have sprouted the point of their roots.


Germinación semillas de marihuana: primeras raíces




Normally, the water or paper towel methods of germination are combined with one of the following, before being placed in the final pot, although there are some growers who skip the first step and germinate directly using one of the following methods:


Peat moss jiffy or coconut fiber method

This is one of the most popular. The Jiffy is a peat moss disc that is dehydrated and sterilized, and contains soil and the ideal quantity of necessary nutrients: nitrogen, phosphorus, potassium, calcium and magnesium. In order to use it, we put it in water between 24-28Cº and wait for 5-10 minutes until it expands. We take it out and squeeze it a little in order to remove excess water, without wringing it out. After doing so, we are left with a little bag of soil that functions as a holder and germinator at the same time. Make a small hole between 5 and 10mm, then place the seen with the root pointing towards the bottom and then cover it with soil.


Rockwool method

Using this method, marijuana grows quickly although you have to continue paying attention to the level of humidity or it will dry out very fast. You should observe and add water according to need. In this case, a greenhouse would be very useful to maintain and control the humidity level.

This method is best if you want to grow in hydroponic or aeroponic systems since it won’t leave behind traces of peat or coconut fiber like the Jiffy method. Place the seed in the wet soil the same way as with the previous method, at most one cm from the surface and with the root facing downward. When it reaches 4 or 5 cm high it is ready to be transferred to the final pot.


Root It sponge and propagation sponge method

These are biodegradable sponges that stimulate the growth of marijuana roots, and include an innovative hole to help cuttings grow roots. This new method balances the quantity of water and oxygen for better results. The steps that one must follow to germinate our cannabis seeds are the same as those with the block of rockwool.

Once we have planted the seed in one of these mediums, we place them in our greenhouse or prepared recipient, and wait between 2 and 4 days, until the plant rises a few centimeters from the soil. During this time, it is very important that we continue controlling the balance between light, water and temperature.




Once we have our tiny marijuana plant, we can transplant it into our final pot, a larger space where it can grow roots and develop a good foundation. In some cases, growers pass from step 1 to step 3, or rather, they move the seeds that have been germinated in water or paper towel to their final pot.

In this case, before planting the seed, first we water the soil so that it is wet and then we place the seed 5-10mm from the surface with the root pointing downwards. If we plant it first and then water it, we risk the cannabis seed getting lost or falling to the bottom of the pot, which makes it harder for the plant to grow as it searches for the surface.

Now is the moment to place the plant in an illuminated area. Whether we want to plant indoor or outdoor marijuana we must adapt the space so that the temperature is ideal (using greenhouses or heaters) and so that there is sufficient light (using different types of lamps).

By this point we have our tiny marijuana plant and can now enjoy and care for its growth.


Evolución de la germinación de una semilla de marihuana


*Other articles of interest:

Germinating seeds with guaranteed success

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