Guano: One of the best organic fertilizers for cannabis.

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  • Guano is a nutrient-rich organic fertilizer, ideal for improving the health and productivity of your plants. Learn about its types, benefits, and how to use it effectively in this article from Pevgrow.
  • Best Organic Fertilizers for Cannabis
  • Homemade Fertilizers for Weed


A vibrant garden scene at sunset shows a wooden table with a mound of fertile soil type guano, a small shovel, and several green plants. The background features lush foliage and flower beds.


Guano is a highly valued organic fertilizer in agriculture and gardening due to its high concentration of essential nutrients for plants. In this article, we will explore what guano is, its meaning, the different types of guano (bat guano, seaweed guano, sugar molasses guano, and marine bird guano), how to use it, its benefits, and some practical tips to maximize its effectiveness in your crops.



⭐ What is Guano?



Guano is a type of organic fertilizer mainly composed of excrements from marine birds, bats, or seals, though it is also extracted from seaweed or sugar molasses. Over the centuries, guano has accumulated in large deposits, especially on islands and caves, where it has partially decomposed. This decomposition process has enriched guano with essential nutrients like nitrogen, phosphorus, and potassium, making it an extremely effective fertilizer.



⛳ Meaning of Guano


The word “guano” comes from the Quechua term “wanu,” which means manure or fertilizer. Historically, guano has been used by ancient civilizations, such as the Incas, who recognized its value as a powerful natural fertilizer. Today, guano is still valued for its fertilizing properties and its ability to improve soil productivity sustainably.



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✨ Guano as Fertilizer


Guano is a natural fertilizer that provides a quick and sustained release of nutrients, making it ideal for various applications in agriculture and gardening, which is why it is used so much as fertilizer for weed. Its high nitrogen content promotes vigorous vegetative growth, while phosphorus and potassium encourage strong root development and abundant flowering. Additionally, guano contains micronutrients and organic matter that improve soil structure and overall plant health.




👌 Types of Guano


Bat Guano

The bat guano is collected in caves and is highly prized for its nutrient richness. This type of guano has an excellent balance of nitrogen, phosphorus, and potassium, and is especially beneficial for plants with high nutritional requirements.

  • High nitrogen content
  • Rapid nutrient release
  • Excellent for vegetative growth and flowering



Seaweed Guano

The seaweed guano is collected on islands where many birds nest in large colonies. It is known for its high phosphorus concentration, making it ideal for stimulating flowering and fruit development.

  • High phosphorus content
  • Ideal for flowering and fruiting
  • Contains essential micronutrients




📲 How to Use Guano


Guano can be used in many different ways in cannabis crops or any other plant. Thanks to its versatility, you can apply guano for the growth phase, which will provide nitrogen quickly and give the substrate a reserve of phosphorus, potassium, and other elements. Once the plants begin to flower, you can change the fertilizer and use guano for flowering until the plants are harvested.



Soil Amendment

Soil Preparation: Mix dry guano with the soil before planting to enrich it with nutrients. Use about 50-100 grams per square meter.

Garden Maintenance: Sprinkle a thin layer of guano around the base of the plants every 2-3 months.


Liquid Fertilizer

Preparation: Dilute 1-2 tablespoons of guano in 5 liters of water and let the mixture sit for 24-48 hours. You can also use prepared liquid bat guano.

Application: Use the solution to water the plants every 2-4 weeks during the growing season.



Top Dressing Fertilizer

Application: Spread a thin layer of guano over the soil surface around the plants as mulch. This will provide a slow and steady release of nutrients.



🚀 Benefits of Guano


  1. Rich in Nutrients
  2. Improves Soil Structure
  3. Promotes Microbial Activity
  4. Increases Productivity



✅ Tips for Using Guano


  • Moderation: Although guano is an excellent fertilizer, it is important not to overuse it. Too much guano can cause an excess of nutrients, which can harm the plants.
  • Mix Well: Make sure to mix the guano well with the soil to avoid concentrations of nutrients that can burn the plant roots.
  • Storage: Store guano in a dry and cool place to maintain its effectiveness and prevent it from degrading.



🔥 Conclusion


Guano is one of the most potent and versatile organic fertilizers available. Its high nutrient content and benefits for the soil make it an ideal choice for gardeners and farmers looking to improve the health and productivity of their plants sustainably. Whether you use bat guano, seaweed guano, sugar molasses guano, or marine bird guano, following the recommendations and tips provided in this article will help you maximize its benefits. At Pevgrow, we offer a variety of high-quality guano products to meet your cultivation needs. If you prefer to see other options for cannabis fertilizer, do not miss this other article that presents the best mineral fertilizers for weed. Visit our online store and transform your garden with the power of guano!



🎯 FAQs


How often should guano be applied to plants?

The frequency of guano application depends on the type of crop and the specific needs of the plants. Generally, it is recommended to apply it every 2-3 months in gardens and orchards. In pots and containers, it may be useful to reapply superficially every 2-3 months. For lawns, spread guano once or twice a year, preferably in spring and autumn.

What is guano used for?

Guano is a highly valued organic fertilizer for its rich concentration of nutrients such as nitrogen, phosphorus, and potassium. It serves to improve soil fertility, promote vegetative growth, favor flowering and fruit development, and improve soil structure. Additionally, it increases beneficial microbial activity in the soil.

Where does guano come from?

Guano mainly comes from the excrement of marine birds and bats, though it also comes from sugar molasses or seaweed. It is collected on islands where marine birds nest in large colonies and in caves inhabited by bats. These excrements decompose and enrich over time, creating a nutrient-rich organic fertilizer.

What is bat guano?

Bat guano is the excrement of this animal collected in caves and is highly prized for its nutrient richness. It is especially beneficial for plants with high nutritional requirements due to its excellent balance of nitrogen, phosphorus, and potassium.

What is marine bird guano?

Marine bird guano is collected on islands where these birds nest in large colonies. It is known for its high phosphorus concentration, making it ideal for stimulating flowering and fruit development in plants.

How is guano used as a fertilizer?

Guano can be used in several ways: as a soil amendment by mixing it before planting, as a liquid fertilizer by diluting it in water for irrigation, or as a top dressing fertilizer by spreading it around the base of the plants. Each method provides an effective release of essential nutrients for the plants.

What are the benefits of guano?

The benefits of guano include its high concentration of nutrients, improvement of soil structure, promotion of microbial activity, and increase in crop productivity. Additionally, it is an organic fertilizer that contributes to sustainability and long-term soil health.

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Alan Martínez Benito
Alan Martínez Benito
CEO of Pev Grow, expert grower with more than 20 years of experience.
In constant struggle for the regulation of cannabis, mainly in the medicinal field.
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  1. Avatar for Antonio Iqbal

    Hey, after reading the article, I totally got how awesome guano is for nourishing cannabis plants, it’s amazing!