What are the Benefits of Guano Fertilizer?

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Guano fertilizer is organic, sustainable, and provides plants with complete nutrition. Not just a fertilizer, guano is ideal for starting seeds and rooted cuttings as well. Using guano fertilizer in the garden also improves soil texture and drainage, and the high organic matter content adds to the soil for long-term improvement.

Guano is the excrement of bats and sea birds. The name originates with the Incas who used the term to describe sea bird dung, but modern usage includes bat dung under the same term. In the mid 1800's, guano was used extensively in agricultural practices in the United States.

Guano fertilizer is a naturally derived fertilizer that is suitable for organic growing practices. When growing plants organically, growers cannot use chemical fertilizers, but plants still need nutrition to grow. Using an organic, naturally derived fertilizer such as guano gives the plants the nutrition they need. In addition, guano provides complete nutrition for plants in concentrations higher than many other organic fertilizers. Higher concentration means fewer applications, saving time and money for the gardener.


When used to build up soil, guano fertilizer improves poor soil by adding organic matter and improving the drainage and moisture retention. Reaching a balance between moisture retention and good drainage is important; if the soil drains too fast, the plants will dry out too quickly. Alternately, if the soil to dense and compacted, it will hold water, and few plants can survive in heavy, wet soil conditions. Adding guano to the soil improves moisture retention in sandy soil and improves drainage in heavy clay soil.

Natural compounds in guano fertilizer also attack and destroy nematodes. Nematodes are microscopic animals that live in the soil and include a variety of species. By eliminating nematodes, guano fertilizer helps to protect plant root systems and, in turn, increases the ability of roots to absorb nutrients from the soil or planting medium.

Guano fertilizer also benefits soil by controlling fungus. Fungus in the soil can affect the health of plants by attacking the root systems. Guano has natural anti-fungal properties.

As a natural fungicide and nematicide, guano fertilizer makes a good medium for starting seeds and rooting plant cuttings when a sterile environment is important. Soil microbes that can cause damage to the developing systems easily damage plant seeds and cuttings. Using guano as a rooting or germination medium gives the seeds and cuttings necessary support, good drainage, and a sterile environment.


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Post 3

When purchasing bat guano fertilizer you should keep in mind that it is not all the same. The quality of the guano varies depending on the species of bat it came from. Not all bats eat the same foods. Some are vegetarians and others eat small living creatures.The age and where the guano was collected can make it better or worse, too.

Post 2

@mobilian33 - I agree with the article that guano is one of the best fertilizers you can use. This fertilizer does a great job of conditioning the soil and helping whatever you have planted grow, and at the same time it is a natural fungus killer.

As far as the smell goes, well, it is waste so it doesn't smell like roses. However, bat guano has a mild odor and nowhere near as powerful as turkey manure. You can use bat guano in either a dried form or fresh. If you are worried about the smell then go with a dried form. This way you get fertilizer with less of an odor. Though, as I said, even the smell of the fresh bat guano is not overpowering.

Post 1

I have been told that bird fertilizer is one of the best fertilizers you can use. Farmers around where I live use turkey manure in their fields. The bad thing about turkey manure as fertilizer is that you can smell it a mile away, maybe even farther. If you have ever been driving through the country and passed a field that had turkey manure in it then you know what I am talking about. The smell is almost enough to make you sick.

Anyway, this article makes guano sound like one of the best fertilizers you can use for a garden. I am wondering whether the smell of guano is any better than the plain turkey manure or is it basically the same.

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