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Growing weed outdoors – The Basics

If you are planning to grow outdoors easily, you must follow certain tips on how to do it. This article explains step by step how to achieve a bountiful and quality harvest. Furthermore, to obtain an acceptable final product, you need to follow guidelines that will help you get higher quality yields in outdoor marijuana cultivation. The growing season takes place outdoors from March-April to September-October in the Northern Hemisphere. Here we explain everything about growing weed outdoors step by step in an easy way.

How to grow weed outdoors: steps to follow

Some of the steps to follow are as follows:

Choose the right seeds and pots

For growing weed outdoors, first you need to choose the type of marijuana seeds you want to cultivate, whether they are hemp seeds or CBD seeds, outdoor marijuana seeds, feminized seeds, or automatic seeds, selecting the perfect genetics for outdoor marijuana cultivation.

Once you have the seed, you can germinate it using the paper towel method. The next step is to choose the appropriate substrate for the selected growing area, as different soil types are needed for plants in very humid places compared to very dry ones.

You will also need a few pots for the plants. Even if you plant in the ground, it’s necessary to grow the seeds a bit before transferring them to their final medium to ensure the plant’s survival in a hostile environment. Specifically, you will need two sizes of pots:

  • A 7x7x9 cm pot to place the seeds once germinated, when the root has started to grow. It should be placed at a shallow depth.
  • A pot for its growth.
Tips for Outdoor Marijuana Cultivation

The first days of life

After about 10 days, the plant will have stretched almost to the point of bending. Now it should be transferred to a 3.5 L pot. You should bury the trunk that tends to be weak, approximately two-thirds, which is about 6 out of 10 cm of the trunk length. This prevents bending, and also extra roots will grow in the buried part, promoting more vigorous growth. Water around the edges until the plant starts absorbing more water, as wetting the trunk could lead to rot.

These plants should be kept in a place where direct sunlight reaches them, preferably sheltered from wind and cold. In addition, you can bring them indoors during the coldest nights or windy days. When they reach a foot off the ground, around a month old, you can move them outside, as they will have developed some resistance to various threats.

Choose quality preventive products

It is essential to have three preventive products in addition to fertilizers when cultivating outdoor plants, which are:

  • Neem is used to repel insects such as whiteflies and aphids. It should be used as soon as spring begins; the first spray for your plants should be this natural product. It comes from a poisonous plant, so if insects smell the Neem plant, they will prefer any other plant. Products like ProNeem can be very useful.
  • Fungi Boom, by Boom Nutrients, will prevent the plant from being infected by typical fungi that attack cannabis plants (botrytis, powdery mildew, etc.). Applying this fungicide will make the plant structure much thicker, as the product contains silica. This also prevents unwanted insects from approaching. It is essential to prevent the appearance of fungi in cannabis cultivation, especially in the early and late weeks of development when the plants are more susceptible to infection.
  • Soil Care Boom will eliminate worms and larvae, preventing them from destroying the harvest. Sometimes it is very difficult to detect them, as they camouflage themselves well among the buds. It’s always better to prevent than to cure, so the first spray should be applied at the beginning of June, repeating every 20 days until one month before harvest.

To spray the plants, they need to be of a certain size, as a plant with a very thin trunk will bend too much and won’t support the weight of the water: you need a strong plant.

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Fertilizer and pH tables for outdoor cultivation

Every day, the plants will continue to grow. Although at first, just water and sun will suffice, gradually they need to be fertilized to develop well and control the pH of the irrigation water. If the pH of the water is not measured, when deficiencies arise, it won’t be clear if it’s due to a lack of something or because the nutrients provided are not being absorbed properly, which happens when pH levels are too high or too low.

The pH in marijuana cultivation during the growth phase should be between 5.5 and 5.8, including the fertilizers. There are a wide variety of marijuana fertilizers available, and the plants will appreciate the care with organic fertilizers if you want to maximize the plant’s potential.

Outdoor Marijuana

During this stage, the plants will need nitrogen-rich fertilizers, which is what they need the most. This can be given in the form of worm humus in the soil and complemented with another biological fertilizer like Bio Vega by Canna.

Necessary transplants

Once the plants stop growing, they will need a transplant and a larger pot, about twice the size of the current one. Wait until they stop growing before transplanting again. If not, they won’t grow anymore.
As summer approaches and the days start getting shorter, the plants will begin to flower. Therefore, around July is the ideal time to transplant to the final pot.

How to grow marijuana outdoors

When the last transplant is done, you can enrich the soil with guano, such as Guano Boom, whether in a large pot or in a hole in the ground. To do this, fill the pot or hole with good substrate suitable for your soil, and mix it with guano, approximately one tablespoon per 7L of soil.

Bat guano is a slow-release nutrient, with high levels of phosphorus and potassium. A month after placing it in the pot or hole, you should create a trench around the trunk to repeat the dosage and cover the trench again. When watering, it will penetrate downwards, providing enough nutrients for the entire flowering stage. With the help of Flowering Boom, for example, or a complete flowering fertilizer.

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This brings us to the end of outdoor cultivation with a quality final product, relatively easily. When there are 15 days left until harvest, you should flush the soil with plenty of water to remove any excess nutrients, ensuring it is as clean as possible before cutting.


After flushing, you should wait for the soil to dry out completely and then maintain it only with water until harvest day, ensuring the soil is dry to prevent excess moisture in the plant, reducing the risk of rot in the buds or similar issues. Finally, all that’s left is to dry the marijuana, cure it, and you’ll be ready to enjoy it. It’s also recommended to use trimmers if you have a large crop.

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Erik Collado Vidal

Con más de 10 años de experiencia en la industria del cannabis, sus experiencias y aprendizaje son la base del éxito de GB The Green Brand.

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