The best growth fertilizers for marijuana

Marijuana plants, like other plants, have different phases in their lifecycle, most simply differentiated into two stages: growth and flowering. In each phase, the plant requires more of one type of mineral or another for development. Therefore, this article will discuss the best growth fertilizers for marijuana.

Factors to consider during the growth phase

It’s essential to understand that the nutrients needed in each phase differ. During the vegetative stage, cannabis plants primarily feed on nitrogen in order to form new cells much faster, providing quality growth to the plants. Indeed, it’s a process that acts from the smallest parts until we see the plant grow.

Remember, nitrogen is the major element that makes up amino acids, which in turn bond together to form proteins. Plus, these proteins are responsible for various functions such as keeping the plant alive or creating cell walls that allow the plant to grow.

Moreover, during photosynthesis, the plant receives light and absorbs CO2, evaporating water and oxygen. Thus, the plant again draws moisture from the soil through the roots, which attract more nitrogen toward the plant… This is the growth cycle.

Among other factors, it’s important to note that if the pH is not regulated, the plant will not be able to absorb nutrients correctly. Therefore, the first thing to do is to control it when using fertilizers to prevent salt accumulation in the soil.

There are many brands of fertilizers, and they all have their growth fertilizers and their flowering fertilizers. Therefore, we have selected some of the best fertilizers for growing marijuana.

Organic growth fertilizers for marijuana

Organic fertilizers take longer to be absorbed by the plants, so they should be applied once or twice a week at most. This is because organic fertilizers remain embedded in the soil, so it’s necessary to water at least once or even twice with water before using the fertilizer again in watering.

Bio Grow by BioBizz

Bio Grow is a very complete fertilizer from BioBizz that always yields good results, both indoors and outdoors. It’s a great source of nitrogen for plants, containing more than 80 different components, all beneficial.

This compound will not only provide the nutrients needed but will also activate the soil’s bacterial life, making plants feed and absorb nutrients much better. Besides, made from sugar cane and beet, just 2 to 4 ml/L added to the water every other watering is enough to ensure exceptional vigor and greenness. Its NPK is 4-6-3.

Top Veg by Top Crop

One of the most concentrated growth fertilizers, producing hundreds of new shoots that emerge from the branches, increasing the leaf surface by the day. Thanks to Top Veg from Top Crop, you’ll get well-formed plants ready for abundant flowering. In fact, this product contains micronutrients and macronutrients, preparing the plant for flowering by providing phosphorus and potassium in small proportions to prevent mineral deficiencies during flowering.

Likewise, it also contains calcium, another common deficiency during the switch to flowering, which the plant will not suffer from since it has been supplied for weeks. With fulvic and humic acids for healthy root growth that helps absorb all those elements. Its NPK is 8-4-7.

Bio Vega by BioCanna

This fertilizer favors vigorous and strong growth of plants until they start flowering. A dose of 2 ml/L is more than enough for an alternate watering schedule, providing very good color without overdoing it.

Thanks to Bio Vega from Canna, plants will grow very green and healthy, but it’s important not to overuse the fertilizer, as it’s very concentrated. Used correctly, you’ll have plants that develop with a good trunk and strong branches, absorbing light and continuing to grow until the photoperiod stops. Further, for plants with a long growth phase (exceeding 3 months), it might be necessary to increase the dose, as larger plants will need more nutrients.

Mineral growth fertilizers

Mineral fertilizers are quickly absorbed by the plants, meaning if high doses are used, the plants will absorb it soon, and the excess will be more noticeable than with organics. However, when used correctly, they can achieve better structures than organics.

TNT Complex by Hesi

This fertilizer is composed of a multitude of minerals necessary for plants, ensuring they lack nothing from their initial phase until they’re about to flower. TNT Complex by Hesi contains macroelements like all fertilizers, but its strength lies in its composition, including copper, zinc, boron, molybdenum, cobalt, magnesium, calcium, iron, vitamins B1, B2, B6, and amino acids.

With it, you’ll achieve fast and strong-growing plants, prepared for a flowering phase without bending branches, or at least reducing the possibility of it happening. Plus, it’s used at a rate of 2.5ml/L to 5 maximum, but normally 2.5ml/L in alternate waterings is sufficient for healthy growth, so there’s no need to overuse it.

Solotek Grow by Grotek

Solo-Tek Grow will accelerate the growth process of the plants with a compound of the highest quality minerals, fully absorbable by the plants. When cultivating with Grotek, production is more than assured, and it brings out the main characteristics of the plant, its stature, strength, and structure.

It not only provides high doses of nitrogen but also contains several essential microelements for plants, preventing deficiencies throughout the plant’s growth. It is combined with Vitamax, although it can be used alone if the growth period is short.

A very low dose is used throughout the process, 2 ml/L of water, and it’s enough to add it to one watering per week. The issue is that it’s quite dense, and it needs to be well mixed before use. Its NPK is 6-3-7.

Grow by GB Nutrients

Specifically designed to optimally enhance the vegetative stage of plants, Grow by GB Nutrients is a sublime growth base fertilizer. This innovative product stands out from the crowd due to its unique nutrient composition and advanced Biomol-S technology. The inclusion of Biomol-S technology adds metabolism-inducing biomolecules (Fucoidan and Alginate), which provide an additional dose of energy, contributing to more robust and vigorous growth.

Grow provides plants with all the nutrients necessary for their growth phase. In addition, it is important to note that its composition is based on bio-mineral components of high and easy absorption, which favors the uptake of nutrients by plants. This detail will allow them to acquire all the essential elements, in the right amount, thus promoting a healthier and more balanced growth.

Terra Vega by Canna

This fertilizer from Canna is not very aggressive with its salts, and although it’s used in considerable quantities, not much is retained in the soil, and the plant absorbs it quite well.

In addition, it’s ideal as a growth fertilizer for outdoors because it leaves little residue. Also, it is suitable for indoor crops, as plants grow slower but more compact than usual, providing a solid base for the stem and branches. Moreover, Terra Vega ensures the branches can support much more weight, leading to heavier future buds. It’s used at a rate of 4 ml/L for alternate waterings, ensuring the plants lack nothing.

Beyond these growth fertilizers for marijuana, many other options are available on our website, allowing you to find the one that best suits the needs of each cultivation.

Grotek Growth Booster

Grotek Growth Booster is a highly concentrated powdered growth stimulator designed to maximize the vegetative stage of cannabis plants. Its NPK 16-40-0 formula provides a strong supply of phosphorus and nitrogen, promoting healthy roots, sturdy stems, and large leaves that prepare plants for a more abundant and balanced flowering phase.

This fertilizer features easy single-application use: simply dissolve 1 g of Growth Booster in 10 liters of water and apply during the vegetative stage, preferably when plants have developed their first true leaves. Its rapid absorption ensures vigorous, uniform growth without the risk of over-fertilization.