In marijuana cultivation, the use of organic fertilizers has become an increasingly popular practice among those seeking a natural and environmentally friendly alternative to nourish their plants. To learn more, here’s everything you need to know about them.
What are organic fertilizers?
Organic-mineral fertilizers (those with EDTA chelates in them) are biological fertilizers that come from compost, bone meal, worms etc. which have a perfect balance between micro and macronutrients thanks to the chelated agents. These are heavy metal elements that have been turned into absorbable material for plants.
Furthermore, these fertilizers are essential for nurturing marijuana, providing balanced and environmentally friendly growth.
Characteristics of organic fertilizers
What sets these organic fertilizers for weed apart is their plant or animal origin and chemical-free composition. Indeed, comprising materials of biological origin, they offer a broad range of essential nutrients that promote healthy marijuana growth.
Some of their characteristics include:
- Improvement in water absorption capacity, perfect for areas with drought or less water.
- Maintenance of ecological balance and promotion of soil biodiversity.
- Substitution for chemical fertilizers.
Benefits of organic fertilizers
- It is sustainable, with residues not harming ecosystems, respecting the environment.
- It enhances plant health.
- These fertilizers stimulate root development and improve soil structure.
- All of this results in increased yield, with healthier plants and a more abundant and higher-quality harvest.
Thus, organic fertilizers emerge as an alternative to inorganic fertilizers, being more sustainable and beneficial for crops and plantations.

Various types of organic fertilizers exist:
- Solid fertilizers: Include elements like compost or manure and are mixed with the soil to release nutrients slowly.
- Liquid fertilizers: Applied through irrigation or spraying systems, they are absorbed more rapidly by plants.
Each type has specific application methods and action times that should be respected to maximize effectiveness.
How to use organic fertilizers
The proper application of organic fertilizers is crucial for optimal marijuana development. Moreover, correct application ensures balanced nutrition throughout all stages of the plant’s growth.
Marijuana life cycle and nutrition
During the vegetative phase, marijuana plants require high levels of nitrogen to encourage healthy foliage development. In addition, compost or worm castings, providing a plethora of nutrients, are recommended during this stage.
As the plants transition to the flowering phase, nutritional needs change; focusing on phosphorus and potassium to enhance bud production becomes crucial. In this case, during this stage, bat guano or seaweed-based fertilizers are highly effective during this phase.
Application methods
For liquid fertilizers: Mix them with irrigation water and apply directly to the substrate. This method allows for rapid and controlled nutrient absorption. Follow the manufacturer’s instructions.
Regarding solid fertilizers, spread them around the stem or incorporate them into the soil for gradual release, always following specific instructions for each.
Monitoring substrate’s pH is essential to prevent nutrient blockages and ensure effective absorption.
Tips for using organic fertilizers
It’s worth noting that organic fertilizers for marijuana can impart a distinctive flavor when smoked. Therefore, it’s advisable to allow 15 to 21 days for proper curing. This is due to the longer nutrient release time in the soil, resulting in an extended absorption period.
With thorough curing, slightly longer than usual, the flavor left by these fertilizers can be eliminated.
Top organic fertilizers
In our organic fertilizers and nutrients category, you’ll find a wide variety of quality organic products, with the following standing out:
Organic Tripack
The Organic Tripack by Boom Ntrients comprises a comprehensive set of organic products, encompassing the Organic Roots root stimulator, Organic Grow growth fertilizer, and Organic Bloom flowering fertilizer. All these components are 100% plant-based and hold certification from CAAE. In addition, this exclusive GB The Green Brand pack, free from chemicals and mineral fertilizers, proves versatile for cannabis cultivation, whether indoors or outdoors, in soil, coco, or hydro.
Formulated through vegetative and hydrolyzed cereal fermentations, involving soy, corn, rice, and wheat, this Tripack ensures optimal results across various plant life stages. When each product within the Tripack is appropriately used, following specific doses and application recommendations, it actively fosters the healthy, vigorous, and productive development of marijuana plants.
Delta 9
Delta 9 by Cannabiogen is an early flowering bio-stimulator that enhances the metabolism of marijuana plants. Acting as a catalyst without altering metabolism, it is suitable for various growing media. Further, this fertilizer provides up to 60 compounds that improve crop yield, increasing bud weight and size.
Additionally, it promotes terpene creation and resin production, activating metabolic and enzymatic processes. In truth, proper use of Delta 9 during the flowering cycle can lead to a resin-filled harvest and high-quality flowers.
Bio Grow
Bio Grow by BioBizz is an essential organic fertilizer for the growth phase, composed of 100% organic ingredients that provide everything necessary for the vigorous development of plants in their initial cycle. This fertilizer stands apart for its natural formula of over 80 components, free from phosphates harmful to the environment and people.
Designed for use in organic substrates like coco and soil, Bio Grow activates the soil’s bacterial life, facilitating nutrient assimilation.
Great White Premium Mycorrhizae
Great White Premium Mycorrhizae by Plant Success is a highly effective and complete organic fertilizer incorporating a variety of beneficial bacteria to foster exceptional plant growth. Unlike conventional fertilizers, this complex introduces live microorganisms into the substrate, improving its structure and conditions to maximize nutrient absorption by plants.
Superguano
Superguano from Top Crop is a 100% organic fertilizer based on bat guano, known for its high phosphorus and calcium content. Designed to be mixed with the substrate from the beginning, this slow-release fertilizer provides essential nutrients for lush flowering and healthy root development.
Furthermore, the bat guano used is harvested from remote caves and complies with European regulations for organic agriculture. Recommended doses prevent over-fertilization, with application varying depending on potted or soil cultivation.
On the whole, thanks to any of these products, you’ll obtain high-quality organic fertilizers for biological cultivation, delivering unique results.