How many plants per grow light?

When it comes to cultivation, many questions can arise. Among them is how many plants to place per grow light, a question that many growers ask and can be easily answered. The number of plants we place depends a lot on what type of plants are chosen and how they are grown, in addition to the available space and power.

Factors to consider

When choosing the number of plants per light to have, several things must be considered:

• If growing from seeds or from clones.
• It will depend on whether auto-flowering or seasonal seeds are grown.
• Consider whether the plant concentrates its production on the central axis or on the branches.

Therefore, depending on the type of plant or cultivation method, it is important to know how many plants to place. This way, an excess number of plants, which can affect cultivation, can be avoided.

It’s important to note that all lights cover practically the same space and number of plants. Thus, the plants adapt to the space and the power of the light.

Therefore, the same number of plants can be placed under a 250W light as under a 600W light. The difference is that with the 600W light, yields of 400-500 grams can be achieved, while with a 250W light, up to 150-200 grams, resulting in smaller plants, but the same quantity.

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How many plants per light can be placed?

If you want to know the number of plants to place per light to make the most of the cultivation, you must consider the type of seed or if they are clones. Here you can find all the relevant information:

Number of clones per light

The advantage of using clones is that they possess the same characteristics as the obtained plants and do not require a long growth period. Therefore, they can move to flowering more quickly.

The best thing to do to get the most weight with clones per square meter is to place as many as fit in 3L pots so they can flower from the start. You can place between 16 specimens per square meter up to 36 with a maximum of 7 days of growth. This way, they will approach the 500 grams that is the maximum achievable with a 600W light.

However, if you want to place 9 plants, less weight will be obtained, as the buds will be thinner. To get the best results, a SOG or SCROG system can be created to increase production. You can get all the necessary materials at Growbarato.net your online grow shop.

Number of feminized seeds per light

When growing from feminized marijuana seeds, the development of the specific genetics must be achieved. Thus, it’s interesting to know the structure it will have, whether it focuses its production on a large central cola or generates a large number of lateral branches, to know the number of plants to place. For example:

• Varieties like Critical or Cream Caramel have development focused on the central part. Therefore, 12-16 specimens can be grown per square meter, giving a maximum of 20 days of growth from germination.
• On the other hand, varieties like Northern Lights stand out for their broad development, so no more than 12 should be placed, reducing the number to 9, 6, or 4 specimens, distributing a large number of large buds throughout the plant.

By knowing the characteristics of each genetic, the cultivation method and the number of plants can be oriented. That is, if they are tall, fewer are placed, leaving space, while if they are wide, they will need more space.

Number of auto-flowering seeds per light

Cultivating auto-flowering varieties indoors is a good option because it ensures the best possible climate, and these will come out the best they can based on how they are cultivated. 

It should be noted that auto varieties are quite delicate at the root level, so they should be watered sparingly.  These have a development marked by the predominance of their genetics.

In this sense, when working with automatic strains, the development can be more vertical or horizontal, although it is not entirely exact. Any stress that the plant suffers can stop its growth or make it insufficient to yield more later on. To achieve optimal development, the genetics must be considered:

• If it’s an auto from a Northern Lights, 4-6 specimens per square meter will suffice, making full use of its potential.
• If an auto Critical variety is used, then 12-16 specimens per square meter can be placed, where its development and production are dominated by a central cola.

The results obtained depend on the experience of each individual, so if autos have never been grown before, it is advisable to plant a few more. This type of variety allows for faster harvests. There are those with 2-month flowering periods and those with 3. This time difference is important when knowing how many plants per light to place:

• In the case of the 2-month varieties, they will yield up to 40 grams dry, filling a one-square-meter space. With them, you can fill a one-square-meter space and harvest 400 grams per light.
• The 3-month varieties become larger, reducing the number of plants to place to 4.

Now that you know how many plants per light are needed, it’s just a matter of putting it into practice. If a cultivation is done with these quantities, it will be enough to fill all the space and achieve a very good yield of dense and weighty buds.