Guano is considered one of the most powerful fertilizers in cultivation

bat guano for cannabis

Feed your weed the natural way with guano

Guano is considered the most efficient natural fertilizer in the world. It can help your weed develop beautiful, strong, oily flowers. It contains 33 times more nitrogen than regular animal manure and is rich in many minerals. Guano fertilizer is harvested from the decomposed excrement of bats. You can spend a lot of money and buy dozens of bottles of chemical fertilizer designed to strengthen your buds. However, none of them work as well as an all-natural organic fertilizer made by these furry flying mammals.

fertilizer, guano

A long history between guano and plants

"Guano" is a general name for fertilizers derived from seabird droppings of bats and seals. Although in most cases it's mostly bat shit. It goes without saying that these bats suck gold.

Yes, you read that right: the best organic fertilizer in the world is made from bat droppings. Specifically, bats living in caves, which are mainly found in Mexico, Jamaica and Indonesia.

Guano was widely used among the natives of Latin America centuries before the Spanish conquest. Mainly as a fertilizer intended to increase yields. It wasn't until the early XNUMXth century that western farmers “rediscovered” guano. At that time, the demand for the product increased. Local farmers tapped the product primarily in the North Carolina area of ​​the United States. When they decided to study the matter in more depth, they discovered that the quality of guano depends on the concentration of nitrates it contains. Farmers have found that guano mined in dry climates contains a higher concentration of nitrates and is of excellent quality.

In fact, it was the British who managed to stumble upon the "world guano treasure", which they found on pastoral islands off the coast of Peru in South America. Subsequently, they began work to extract and transport the product to Great Britain.

Guano law

 Since the British had a monopoly on Peruvian equipment, American farmers started resenting and pressuring the government to help them solve the problem. As a result, one of the strangest and most dominant laws in the history of the United States was born. The Guano Law was passed by the US Congress in 1856 and approved by then President James Buchanan.

All in all, this means that every American citizen is allowed to take control of any island in the world where guano deposits exist as long as the island is uninhabited or already owned by someone else. If that is not enough, the law allows the US president to use force to maintain an island. In this way the law also states that the United States is no longer attached to the spot after all the guano it contains has been used.

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Vitamin bomb in the garden

There are several types of guano when the differences mainly concern the source of fertilizer and the percentage of existing elements. There is guano which is very high in nitrogen, of course in the appropriate growth phase and the guano which is rich in phosphorus or potassium which we would prefer to give during the flowering period.

Some of you must be wondering why the hell is all this supposed to interest me. Well, the brief history of guano that we have presented above is certainly not necessary information for those who want to grow some quality weed, but we thought you would be happy to expand your knowledge a bit. general with some dates and names of countries.

The real reason why you should be interested in a raw material that comes out of the bat hole. It is that it is a crazy fertilizer that will take care of your flowers.

It is recommended to mix the guano with the soil even before transferring the plants. It is also possible to spread over the top layer of the soil and so when watering the important elements in it will reach the roots. Hydro-cultivators usually dissolve guano and add it to the growing medium in a liquid state.

Another essential advantage of the product, guano is a natural organic fertilizer. It is therefore extremely forgiving in terms of quantities in use which means that it takes little to be effective and therefore it is very difficult to "burn" the plant or damage its roots.

Growing cannabis with bat guano

As these bats have lived in the same cave for generations, their droppings accumulate on the cave floor and organic matter quickly decomposes. As a result, they leave behind a surprisingly rich mix of all the nutrients in the bat diet.

Although primarily used as a macronutrient fertilizer, guano is also very useful for cannabis. It contains suitable micronutrients which become readily available when they break down in the soil. As bat guano is teeming with microbial life, it is an excellent regulator of soil microfauna. Thus, the bat guano present in the soil helps to make nutrients more available, while acting as a organic fungicide, beneficial microbes attacking the harmful fungus.

Does the source of the guano matter?

Guano is made from what bats eat. That's why growers can tailor the specific guano fertilizer they give their plants at each stage of growth depending on the source of the nutritional additive.

Mexican guano is mainly harvested from insectivorous (insect-eating) bats, such as the Mexican free-tailed bat. Thanks to its diet rich in insects, Mexican bat guano has a high nitrogen content. It is therefore perfect for fertilizing your cannabis during the vegetative stage of growth. The reason is that nitrogen is an essential nutrient for the photosynthetic capacity of the plant. 

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Jamaican bats, on the other hand, eat fruits and berries as well as insects. This is equally important for cannabis growers, as fruits and berries are one of the best natural sources of phosphorus, which helps cannabis plants during flower formation. You just have to wait the first few weeks of flowering to feed your plant with Jamaican bat guano.

Bat guano is also harvested for commercial purposes on the islands of Indonesia, where bats are frugivorous, that is, their diet consists only of fruits and berries. As these Indonesian bats are very demanding, the guano they produce has the highest phosphorus / nitrogen ratio. With such a ratio, using Indonesian bat guano for flowering is ideal, as phosphorus helps plants form flowers without nitrogen, which would cause unwanted foliage production.

Guano tea

Whether you use pots or plant directly in the ground. Your cannabis plant will benefit from the slow release of organic nutrients provided by adding guano to the soil. To apply it, just add two full tablespoons per 7 liters of soil substrate and mix well. If time permits, it is best to let this soil mixture sit, covered, for no more than a month. All this so that the microfauna has the possibility of making nutrients available from day one.

The recipe for bat guano tea for flowering or vegetation is very simple. To do this, just add 3 tablespoons of bat guano to 3,5 liters of hot water and mix well. Once the guano has dissolved, let the mixture sit overnight and feed your plants with it the next day.

An even simpler method of feeding your cannabis with guano is direct application to the ground or burying. The best way to do this is to dig a shallow ring (5 inches) around the trunk of your plant, halfway between the trunk and the sides of the pot. Next, scatter two tablespoons of guano per plant, then cover it with soil and, if using, mulch.

Pre-mixed potting soil

Lucky for us, there's another convenient way to get guano into your garden without even getting your hands dirty. The pre-mixed potting soil containing guano! This is the easiest way to ensure that your plant has access to the nutrient benefits of guano.

The continued success of guano for growing cannabis shows how growers can harness the power of natural fertilizers and fully organic to grow some of the best herbs in the world. Use guano, and you never risk over-fertilizing your cannabis again or having dangerous chemical fertilizer residues in your final product.

Go natural, use Cannabis Guano. The perfect match for plant health.

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Tags : Agriculture / GrownutrientpermaculturePlanting
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The author weed master

Weed media broadcaster and communications manager specializing in legal cannabis. Do you know what they say? knowledge is power. Understand the science behind cannabis medicine, while staying up to date with the latest health related research, treatments and products. Stay up to date with the latest news and ideas on legalization, laws, political movements. Discover tips, tricks and how-to guides from the most seasoned growers on the planet as well as the latest research and findings from the scientific community on the medical qualities of cannabis.

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