When and how to transplant marijuana

when to transplant marijuana seedlings

The roots of marijuana plants are of vital importance when it comes to developing their plant part, as they are the main means of absorbing nutrients.

A marijuana plant with few or little roots will not become a large and robust plant. A plant with a good root system ( root system ) can become a great plant with high yields.

That is why we must try to develop and maintain an abundant and healthy root system from the beginning to the end of the crop. You can use root stimulants like Bio Rhizotonic from Canna or Rootbastic from Atami from the moment you plant your sprouted seeds to give a good boost to root development and consequently rapid growth. It is highly recommended to use rooting products also during transplants as well as Mycorrhizae and Trichodermas to protect and improve root development (if you are going to do an organic crop).


how to transplant marijuana plants

Transplanting consists of  relocating a plant to a new substrate or container with more volume (larger pot or transplant to orchard) to favor the development of the root system.

The roots need darkness, a little moisture and oxygen. The direct light does not sit well with them, because it burns them, nor the continuous air, because it dehydrates them. During the transplanting process, we must take these factors into account to avoid stress on the plant as much as possible, since it is always a somewhat stressful factor.

The use of a good substrate when transplanting is very inclusive in the development of the roots, we must always provide an aerated and pathogen-free substrate, you will find different concentrations of fertilizer (NPK), choose the one that best suits your crop or variety to grow.

The form the roots take partly determines how cannabis (marijuana) plants grow. If the root system is deep and narrow, the plant will be taller and bolder; on the other hand, if it is wide and shallower, the plant will be wider than it is tall, so it is important to correctly choose the pots  to use during cultivation. The growth of the plant is always conditioned also by the genetics of each variety.


Photodependent marijuana plants:

The photo dependent plants will be in the growth stage as long as you provide them 18h of light and 6 of darkness, so in indoor crops you can start the flowering cycle (changing to 12h of light and 12h of darkness) once the plant is adult and you have reached the plant size that you think is appropriate. It is highly recommended to plant the germinated seed in a small pot (about 0.40L), as marijuana needs small humidity cycles to grow quickly and proportionally, which you will not get with a large pot because it has few roots to absorb the water from the entire substrate. You should transplant when the roots have colonized the substrate in which they are located, you can observe this phenomenon if you remove the pot and see the entire substrate surrounded by roots.

Marijuana plant ready to transplant Some of the factors that indicate that you must transplant urgently are the partial decay of the leaves, general yellowing of the plant or the appearance of blockages and deficiencies.You can carry out as many transplants as the plant requires before the start of flowering, normally 1 to 2 transplants are done indoors and 2 to 4 transplants outdoors (since the plant grows longer because it cannot control daylight hours ).

Autoflowering marijuana plants (not photos dependent):

The auto – flowering plants have a short growing season and begin their flowering stage regardless of the hours of light received because they do not respond to photoperiod.Given its limited growth, it is recommended to plant the germinated seed directly in the final pot, since the transplants would slow its growth. Taking the newly germinated plant outside exposes it to attack by birds and the most voracious insects in this weak stage of the plant. You can have it the first days of growth  in a small pot with quality substrate ( indoors ), near a window or balcony in direct sunlight or in a jiffy inside a small greenhouse and transplant it to the final pot once the first ones have been removed leaves within a few days of growth.


You should always take special care with the plants in this process, since it is always a stressful factor for them, but the better you carry out this process the less time it will take to start growing again.

Necessary material:

Pots where you are going to transplant, it is always advisable to clean them before use, to avoid diseases or infections in the roots and consequently in the plant.Latex gloves, also to avoid any contagion that we may cause to the plant. Root stimulant, to promote root development and decrease stress caused during this period. Mycorrhizae and Trichodermas, very effective in promoting the development and protection of the root system. Use only in organic crops, since mineral products damage mycorrhizae and trichodermas.

1.Preparation before transplant:

Do not water a day or two before transplanting, if the substrate is a little dry, it will be more compact and will not come off the root ball when removing it. Be careful with this process, do not allow it to dry out excessively, as it can cause dehydration in the plant.Prepare yourself a comfortable place with space to work, poor posture during transplants can cause discomfort in your back. Insert the pot with the plant into the new container to get an idea of  the amount of substrate to use. Fill the new pot with quality substrate enough so that when transplanting your old root ball does not protrude above the new one.

2. Extraction of the root ball:

Drill a hole in your hand where the root ball fits.Sprinkle mycorrhizae and trichodermas into the hole so they are in contact with the roots.Insert the stem of the plant between your ring and middle fingers (second and third starting with the small one). It will help you hold the root ball without directly touching the roots.

Turn the pot over with the plant and press with the other hand the bottom of the pot (as if you were taking a flan out of the plastic cup) to separate it from the substrate and remove it. There are times that it costs a little, it is better to gently hit the ass of the pot than to pull the stem, since if the plant is young you can end up breaking the stem.Place the root ball in the hole you have previously prepared in the new substrate. Fill the remaining space with more soil. , just a little, since it is a matter of new soil but it is ventilated so that the roots can advance easily.


Prepare the irrigation water together with the root stimulant that you are going to use. Adjust the pH of the solution between 6.2-6.5, a proper pH control will make the plant absorb the nutrients from the substrate and the rooting that you have applied faster.Water slowly until you see a little water drain down the pot drains. Let your plants rest from the stress suffered during this process. Raise the lamps a bit, don’t focus the fans directly on the foliage and wait for this first watering to dry a bit before watering again. If you transplant to coconut, remember that it is an inert substrate (without nutrients) with which you will have to add to the irrigation water the growth fertilizer or the nutrition that you are using at that time.

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