What is the best fertilizer for cannabis at each stage of growth

Successful cannabis cultivation is based on many factors, one of the most decisive being choosing the right fertilizer for each stage of the plant's growth. " Types of marijuana fertilizer " vary greatly, and each stage - germination, vegetative growth, flowering and harvest - demands a specific formulation to optimally nourish the plant.

What is a growth fertilizer?

A growth fertilizer is a product specifically formulated to meet the nutritional needs of plants during their vegetative stage. During this phase, plants require a high supply of nitrogen (N) , which is primarily responsible for the development of strong leaves and stems, as well as a balanced amount of other essential nutrients. These fertilizers help plants grow vigorously and develop an adequate structure to support the flowering stage.

The composition of growth fertilizers is designed to stimulate vegetative development through a high proportion of nitrogen compared to phosphorus (P) and potassium (K). This ratio ensures robust and healthy growth , allowing plants to have the necessary foundation for successful flowering. Its use is especially crucial in crops such as THC-free marijuana, where the quality of growth directly affects the final yield.

The use of growth fertilizers must be balanced and adjusted according to the characteristics of each plant and its environment. An excess of nutrients can cause problems such as toxicity, while a deficiency will limit development. Therefore, it is important to follow the manufacturer's recommendations and adapt the doses to the specific conditions of the crop, such as the type of substrate and the climate.

The importance of NPK during plant growth

NPK refers to the three main nutrients that plants need: nitrogen (N), phosphorus (P) and potassium (K). During growth, nitrogen plays the most prominent role , as it promotes the formation of green leaves and strong stems. Without adequate nitrogen supply, plants will show slow growth and yellowing of leaves, which will affect their ability to photosynthesize and develop properly.

Phosphorus and potassium are also essential during this stage, although in lesser proportion. Phosphorus contributes to the development of a strong root system, which allows plants to absorb water and nutrients more efficiently. Potassium, on the other hand, helps regulate metabolic processes and strengthens the plants' resistance to possible diseases and environmental stress.

Maintaining a proper NPK balance is key to ensuring optimal development during the growth stage. Fertilizers specifically designed for this phase typically contain a high nitrogen NPK ratio , such as 3-1-2 or 2-1-1, depending on the crop's needs. Monitoring growth and adjusting nutrient levels as needed ensures healthy, productive plants.

What are the best liquids for growing marijuana?

Liquid fertilizers are an excellent option for marijuana growth, as they allow for rapid absorption of nutrients and a more uniform application in the substrate or through foliar spraying. One of the best liquid fertilizers for this stage is one with a high concentration of nitrogen and microelements such as calcium, iron and magnesium, which complement the comprehensive development of the plant.

Among the outstanding products are organic formulations, such as those based on algae extracts or bat guano, which, in addition to providing essential nutrients , improve the microbiology of the substrate. On the other hand, synthetic liquid fertilizers offer a precise dose of nutrients, ideal for growers looking for consistent and fast results.

When choosing a liquid fertilizer, it is important to consider the characteristics of the crop, such as whether it is grown in soil, coco or hydroponic systems. In hydroponics, for example, specific liquids allow for detailed control of the nutrient solution and avoid problems such as nutrient lockout. In soil, on the other hand, organic products enrich the substrate in a more sustainable way.

Another aspect to consider is ease of use. Many liquid fertilizers come with clear dosing instructions, making their application simple even for beginner growers. Additionally, some products are designed to be combined with other supplements, such as root stimulators or growth enhancers, maximizing results.

Finally, don't forget that the success of using liquid fertilizers depends not only on the product, but also on its application. It is essential to measure the pH and electroconductivity (EC) of the solution before watering, as these factors directly influence the plants' ability to absorb nutrients. With a good choice and correct application, liquid fertilizers become indispensable allies for the healthy growth of marijuana.

Fertilizers for the Germination Stage

Germination is the crucial starting point in the life cycle of cannabis plants. During this stage, seeds are activated, begin to develop into a seedling, and eventually emerge from the substrate as a young plant. The importance of germination lies in creating a solid foundation for the plant's subsequent growth. If carried out properly, the likelihood of obtaining healthy and vigorous plants is maximized.

Fertilizer Recommendations

At the germination stage, it is important to understand that cannabis seedlings are extremely delicate and do not require a significant amount of nutrients . For germination, mild, slow-release fertilizers are recommended. Organic fertilizers, such as those made from seaweed or worm compost, are excellent options. These provide a moderate amount of nutrients and improve soil structure, facilitating healthy root development.

Liquid Fertilizers

• Liquid fertilizers are ideal for the germination stage of cannabis. Their fluid state facilitates homogeneous application and efficient absorption by developing roots.
• Composition : Low nutrient concentration, with an emphasis on phosphorus. At this stage, phosphorus is vital for the development of the root system. A liquid fertilizer with a low nutrient concentration, but rich in phosphorus, promotes healthy root growth without the risk of over-fertilization.
• Advantages : Efficient absorption and dosage control. The main advantage of liquid fertilizers is their easy absorption by young cannabis roots. This ensures that seedlings receive the nutrients they need for a good start. In addition, the liquid format allows for precise dosage control, which is crucial to avoid overfeeding at this delicate stage.
• Recommendation : B-52 from Advanced Nutrients is a fertilizer that can be used in the germination stage of Cannabis, as well as in other phases such as transplant, growth or flowering phase.

Powdered or soluble granular fertilizers

• Water-soluble fertilizers, which come in powder or granule form, are another excellent option for cannabis germination. These are dissolved in water, creating a nutrient solution that can be applied directly to the soil or growing medium.
• Composition : Balanced with an emphasis on phosphorus, low in nitrogen and potassium. A balanced composition is key during germination. Phosphorus is essential for root development, while low levels of nitrogen and potassium ensure that seedlings are not overloaded with nutrients that they cannot efficiently use at this stage.
• Advantages : Uniform distribution and control of nutrients. The main advantage of water-soluble fertilizers is their ability to provide an even distribution of nutrients. This ensures that each part of the soil or growing medium receives a balanced amount of nutrients, which is crucial for the uniform development of seedlings. In addition, by dissolving the fertilizer in water, the risk of over-fertilization is minimized, as the concentration of nutrients in the solution can be precisely controlled.
• Recommendation : Plagron's SeedBox is a good option for inexperienced growers as it includes a seedbed, 12 germination substrates and a germination accelerator.

Granulated Fertilizer

• Granular fertilizers come in the form of small, solid granules. These are applied directly to the soil, where they slowly decompose, gradually releasing nutrients.
• Nutritional Composition : Low in Nitrogen (N), moderate in Phosphorus (P), low in Potassium (K), and with balanced micronutrients.
• Precautions : Use sparingly, observe seedlings to adjust application, and ensure even distribution to avoid nutrient concentration.

Proper Use of Fertilizer

To ensure successful germination and proper fertilizer use, follow these steps:

• Humidity and temperature : Maintain high relative humidity (around 70-80%) and a stable temperature between 22-25°C (72-77°F). This will provide an optimal environment for the seeds to germinate. To be sure, use measuring instruments such as thermometers, humidity meters...
• Do not disturb the seedlings : Once the seedlings have emerged, avoid touching or moving them excessively, as they are fragile at this early stage.
• Light watering : Water carefully to keep the substrate slightly moist, but avoid waterlogging, which can lead to problems such as root rot.
• Lighting : Provide soft indirect light, such as filtered sunlight or low-watt CFL lights, to encourage healthy growth. Another alternative is to use LED light from Solux Low Consumption LED Bulbs.

Fertilizers for the Seedling Stage

The seedling stage is a critical period in the development of your cannabis plants. During this phase, cannabis seedlings are developing their first sets of true leaves and establishing a more robust root system. The importance of this stage lies in preparing the seedlings for subsequent vegetative growth, ensuring that they are strong and healthy from the start.

What fertilizer to use for marijuana

At the seedling stage, it is essential to provide plants with the nutrients necessary for healthy growth, but in a gentle and balanced manner. Here are the key recommendations:

• Use a fertilizer specifically formulated for cannabis seedlings or young plants. These fertilizers usually have a higher nitrogen (N) ratio to promote leaf development . Opting for Atami's Terra Leaves fertilizer is a good choice for achieving a healthy and strong crop.
• Choose quality liquid fertilizers that are suitable for growing seedlings. Check the manufacturer's instructions for recommended dosages.
• Start with low doses and gradually increase as needed, observing plant growth and paying attention to signs of nutrient deficiencies or excesses.

Proper Use of Fertilizer

To ensure proper use of fertilizers at the seedling stage, follow these steps:

• Dilution : Always dilute fertilizer in water according to the manufacturer's instructions. Avoid overfeeding, as seedlings are sensitive and can suffer damage from excess fertilizer.
• Frequency : Apply fertilizer sparingly and do not exceed the recommended frequency. Most seedlings only require watering with fertilizer every 1-2 weeks.
• Visual monitoring : Constantly monitor the appearance of your seedlings. If you see signs of yellow leaves or deformities, adjust the amount of fertilizer accordingly.

Fertilizers for the Vegetative Growth Stage

Vegetative growth is a crucial phase in the life cycle of cannabis plants. During this stage, plants develop their structure, grow in height, and produce lush green leaves. The importance of this stage lies in establishing a solid foundation for further growth and preparing the plants for the flowering phase. Healthy vegetative growth results in larger, more robust plants with a greater capacity for bud production.

Fertilizer Recommendations

In vegetative growth, cannabis plants have an increasing demand for nutrients, especially nitrogen (N), which is essential for the development of strong leaves and stems. Here are the key recommendations:

• Use a balanced fertilizer with a NPK nutrient ratio of approximately 3:1:2 or 4:1:2. This will provide the nitrogen needed for healthy leaf growth and plant structure development.
• Be sure to follow the manufacturer's instructions for dosage and frequency of application. Start with low doses and gradually increase as needed, but avoid excess nutrients, which can lead to nutrient burn problems.
• Consider using organic marijuana fertilizer or chemical marijuana fertilizer, depending on your preferences and growing practices.

Athena's Pro Grow Box fertilizer is a good choice as it offers a complete solution for growth in the vegetative growth stage of the cannabis plant. In addition to providing a complete and balanced formula of nutrients for roots and foliage, it stands out for being compatible with all types of crops, types of water and growing medium.

Proper Use of Fertilizer

To ensure proper use of fertilizer for marijuana growth, follow these steps:

• Even watering : Evenly distribute the fertilizer in the substrate to ensure that all roots have access to the nutrients.
• Water pH : Check and adjust the pH of your irrigation water to be within the optimal range for nutrient uptake, usually around 6.0-6.5.
• Constant monitoring : Watch your plants closely and adjust fertilizer dosage based on their appearance. If leaves become lighter or darker than normal, this may be an indication of nutrient problems.
• Foliar Fertilization : Occasionally, you can apply nutrients directly to the leaves via a foliar spray to correct specific deficiencies.

Fertilizers for the Pre-flowering Stage

The pre-flowering stage is a crucial point in the life cycle of cannabis plants, as it marks the transition from the vegetative growth phase to the flowering phase. During this stage, plants prepare to develop buds and flowers. The importance of this phase lies in optimizing the conditions for the development of abundant and high-quality buds.

Fertilizer Recommendations

In pre-flowering, cannabis plants require a different ratio of nutrients to encourage bud production. Here are the key recommendations:

• Switch to a fertilizer that has a NPK nutrient ratio that favors phosphorus (P) and potassium (K) . A ratio of 1:2:2 or 1:2:3 is suitable to encourage bud formation.
• It is important to gradually reduce the amount of nitrogen (N) in the fertilizer, as excess nitrogen can inhibit flower production and promote excessive leaf growth.
• Continue to follow the manufacturer's instructions for dosage and frequency of application.

The Top Crop Bud Pack contains Top Crop's Big One fertilizer, which is used to boost floral buds and obtain voluptuous flowers with color and beauty.

Proper Use of Fertilizer

To ensure proper use of fertilizers in the pre-flowering stage, keep the following in mind:

• Gradual transition : As plants enter pre-flowering, begin the transition from a growth fertilizer to a flowering fertilizer. This is done by gradually reducing the nitrogen content and increasing the ratio of phosphorus fertilizer to potassium-rich fertilizer.
• Watch your plants for signs : Pay attention to how your plants respond to the new nutrient ratio. If they start to show signs of deficiencies or excesses, adjust the dosage accordingly.
• Avoid Overfeeding : Continue to avoid overfeeding as it can result in excess nutrient issues and negatively affect bud quality.

Fertilizers for the Flowering Stage

The flowering stage is the most exciting period for cannabis growers, as this is when plants begin to develop buds and flowers. During this phase, the plant focuses on producing cannabinoids and terpenes, which will largely determine the potency and aroma of the harvest. The importance of this stage lies in maximizing the quality and quantity of the buds.

Fertilizer Recommendations

At the flowering stage, the nutrient needs of plants change again. Here are the key recommendations:

• Use a fertilizer specifically designed for the flowering phase, with a NPK nutrient ratio that favors phosphorus (P) and potassium (K) . A ratio of 1:2:3 or 1:3:4 is suitable to promote the formation of dense, resinous buds.
• Continue to reduce the amount of nitrogen (N) in the fertilizer , as plants need less nitrogen at this stage.
• Consider supplementing with secondary nutrients such as calcium and magnesium, which are essential to prevent problems such as calcium deficiency during this critical phase.

One of the most commonly used fertilizers for the flowering stage is Top Bloom from Top Crop as it can be used in both indoor and outdoor crops and the results are very optimal.

Proper Use of Fertilizer

To ensure proper use of marijuana flowering fertilizer, follow these steps:

• Controlled fertilization : Administer fertilizer in a controlled manner and do not exceed the doses recommended by the manufacturer. Cannabis plants can be sensitive to excess nutrients during flowering.
• Constant monitoring : Regularly inspect your plants for signs of nutrient deficiencies or excesses, such as yellow leaves or deformations.
• Water pH : Continue to maintain irrigation water pH in the optimal range for nutrient absorption, which is typically 6.0-6.5.
• Pre-harvest flush : During the last few weeks before harvest, consider flushing your plants with water to remove any excess nutrients and improve bud quality.

Fertilizers for the Harvest Stage

Harvesting is the culminating moment in the life cycle of cannabis plants. It is the time when you finally harvest the precious buds you have been growing for weeks or months. The importance of this stage lies in making sure your buds are at their optimal point of ripeness for maximum potency and quality.

Fertilizer Recommendations

During the harvest phase, fertilizer use is reduced to a minimum or stopped altogether. Here are the key recommendations:

• Stop applying fertilizers at least two weeks before harvest . This allows the plants to purge any excess nutrients and improve the flavor and texture of the buds.
• Instead of fertilizers, consider using supplements that rinse the substrate and help remove fertilizer residue . This can further improve the quality of the crop and a good option is to use Athena Cleanse since due to the cleaning it provides, it improves growth due to the reduction of mineral incrustations.

Proper Use of Fertilizer

To ensure proper fertilizer use during harvest, follow these steps:

• Flushing : During the last two weeks before harvest, flush your plants with pH-balanced water. Make sure the water you drain from the substrate is free of fertilizer residue.
• pH Controlled : Check and adjust the pH of the rinse water to be within the optimal range for nutrient absorption, which is typically 6.0-6.5.
• Visual Inspection : Observe your plants closely to ensure they are ready for harvest. The trichomes (tiny resin glands) on the buds should be milky or amber in appearance, depending on your preference for potency and effect.