What fertilizer to use for growing cannabis?

There are many types of fertilizers for cannabis, organic, mineral, organo-minerals, etc. They all have different uses. We recommend the use of organic fertilizer. One option may be to use them in powder or slow release granules. The purpose of using these solid fertilizers is to avoid having to add liquid fertilizer during watering or to use as little as possible. Since this type of fertilizer is mixed with the soil from the beginning, the plant can feed at its own pace, with no food missing; the grower simply needs to add water when the plant needs it.

There are many other good options for feeding cannabis plants. If nutrition is carried out by liquid intakes rather than with fertilizers available directly in the soil, you can find all the information on this in our article on fertilizers for the cultivation of cannabis. All fertilization options are good as long as it is a complete and balanced fattening.

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Slow release fertilizer:

Bio-Supermix by Plagron
These fertilizers are generally available in the form of granules or powder. The best known is guano, whether it be from bat or seabirds. The plant does not unfortunately only live in guano, so it is necessary to enrich its nutrition with other elements that complement the fertilizer available for the plant. Here is an example of 4 fertilizers that can mix with guano to create a kind of “supersubstrat”, ideal for plants with a long growing period, it can also be used for outdoor crops.

The Bio Supermix from Plagron is an excellent mixture of organic amendments, composed of multiple elements with guano in particular and which provides the plant with a balanced diet throughout the culture.

Aptus All In One Organic Fertilizer
All-In-One Aptus is another fertilizer, granulated this time, which contains all the nutrients needed for the plant, it also includes amino acids. These allow a faster assimilation of the fertilizer by the plant, maintaining an optimum metabolism.

Kit bio enrichment de terre is a kit created from the experience of growers and that includes Nutrihemp, guano and earth glass humus. This kit allows renewing the structure of the substrate already used; it can also be mixed with a special cannabis substrate.

Trichodermas and endomycorrhizae present in AptusMycor Mix, for example, are also essential elements for all organic cultures. They help in a large part the assimilation of nutrients by plants by bringing the previously decomposed food for rapid absorption by the plant, which increases the vigor and production of the crop.
These 4 options are all recommendable and easy to put into practice.

We have already addressed various aspects of indoor cannabis cultivation, such as location selection, pots size, number of plants to be grown and type of fertilizer to be used for cultivation. Now only the testing of the cabinet accessories and the substrate mixture (in case of not having purchased a substrate for cannabis) is required.

Tests to be carried out before beginning cultivation:
Intraction and extraction of air: the temperature with the lamp on must be a maximum of 28ºC, and a minimum of 18ºC lamp off.
Humidity: If possible, control the environmental humidity to obtain 70-80% day and night, for vigorous growth from the start.

Lamp height: In the case of a 600W, it is necessary to maintain a distance of 50-60cm with the plant. The temperature should not exceed 28ºC at the plant level. In the case of higher temperatures, the lamp can be mounted at 70cm or on the contrary, if the temperature is low it is possible to lower the bulb a few centimeters. You simply do not exceed the maximum temperature. The 400W bulbs can be placed at about 40cm.

Beginning of an indoor cannabis culture for beginners
Once the cannabis seeds have germinated and they show their cotyledons, it is possible to carry out the first potting to the smallest pot. Carefully, the seedling is placed in the 1.4L pot. This pot is higher than wide, which allows burying the plant once germinated to half the height of the pot. After a few days, if the stem of the seed stretches (due to lack of light), fill up with soil until covering the stem, leaving only 3 cm of visible stem. The ideal is that the stem does not stretch too much, as this would be a sign of a great lack of light.
Covering the stem means that on one side the plant cannot break or dry and on the other hand we make sure that this buried piece can produce new roots, which will give a plant that better absorbs Nutrients, will have better strength, but also better colonization of the roots in the pot.

At the beginning of cultivation, the watering of the plants must always be moderate. It is important not to flood the substrate; it slows the vigor of the plants and can cause a rotting of the roots and therefore the death of the plant. In early crops, there may be a significant rate of premature loss, this is normal and it is not necessarily to blame “bad” seeds, but rather to check crop conditions that would not have allowed their survival.

To water it is possible to use a glass of water at the start, or a measuring cup, so as not to over water, subsequently a watering can facilitate the task. It is necessary to water regularly, as explained in our guide on the watering of cannabis plants, always maintain certain logic so that the plants are not drowned or dried.


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