GUANOKALONG - bat guano is a rich source of nutrients for your plants
Every Sunday on our blog you have the chance to get to know in detail the best manufacturers of products for indoor and outdoor gardening — whether it's fertilizers, substrates or growboxes and their equipment such as various ventilation or grow lights. In recent weeks truly prominent names have appeared here, including Shogun, Plagron, Bionova and Canna. But what about Guanokalong?

A rather tongue‑twisting name, right? If you are interested in growing plants in soil, organic cultivation and ecological agriculture, behind this name you will find specific, 100% biological fertilizers and a substrate from the Netherlands, enabling growers to achieve higher yields more efficiently by natural means. That alone is a good reason to focus today on products originating in the Dutch village of Aalten.
Origin and importance of the main raw materials
Bats have lived for centuries in coastal caves on Java and Madagascar, feeding on surrounding insects and fruit in these untouched natural environments. Over the years and centuries their droppings have decomposed into a high-quality compost at these sites — a rich source of nutrients for all kinds of plants. This brings us to the common feature and the very basis of all Guanokalong products. The company uses bat guano collected respectfully under strict supervision of local authorities, without disrupting the environment. Workers use old-fashioned spatulas and oil lamps — no machinery or noise. The fact that Guanokalong carries out its work as ecologically as possible is also confirmed by the prestigious Control Union certification, which they have held since 2012. Other valuable raw materials used in Guanokalong products come from other parts of the world and exclusively from verified suppliers with appropriate ecological certification. Palm ash comes from Sumatra and the seaweed powder is from Norway.
Now let's introduce the individual products. We'll start with substrates and soil additives.
Guanokalong soil substrate Guanokalong
Guanokalong produces only one, but unique biological growing medium called Complete Mix. This substrate is sold in classic 50-liter packages. Why should you try it?
- It offers growers convenient use — especially pleasing for beginners. It is a pre‑mixed soil rich in nutrients thanks to the addition of bat guano. You therefore don’t have to worry about fertilizing for at least the first month. In some cases the nutrients in this substrate will last plants up to 6 weeks.
- The composition of this soil will also satisfy demanding growers. It consists of two types of peat (Baltic and black), bat guano, biohumus, PG mix and seaweed extract.
- For convenience: nutrients from this natural growing substrate are released gradually through fermentation, which significantly reduces the risk of "burning" plants due to overfertilization.
- If you store Complete Mix in a dry, dark place, you don't need to worry about an expiration date.
- Worried that bat guano might smell unpleasant? We can assure you there is no unpleasant odor upon opening or when using the substrate.
- Natural soil with bat guano provides plants with added protection against bacterial infections.
- It stimulates root growth and subsequently the development of beautiful, large flowers or fruits.
- Complete Mix can be used both for outdoor gardening and for indoor cultivation in a growbox.
- Using this substrate yields the following practical results:
- Better flavor and overall (organic) quality of the harvest.
- Higher yields.

Guanokalong soil additive
If you want to keep additives to a minimum for organic cultivation, you may be interested in the 100% natural Guanokalong soil additive Lawa Worm Powder. This newcomer excels at improving soil properties so much that adding any other fertilizers may no longer be necessary! It doesn't matter whether you grow in open soil in the garden or prefer pots inside a grow tent.
The final product is a combination of volcanic rock dust and worm castings. On the plant nutrition market it has become truly unique mainly due to its composition, which naturally corresponds to its effect:
- Lawa Worm Powder contains a wide range of rare trace elements.
- The composition of this soil additive is naturally rich in minerals.
- The product itself stimulates plant growth to a degree usually achieved only with many different additives.

Guanokalong plant nutrition
Dry forms of fertilizers
Let's start with the classic bulk form. We mean the universal powdered Guanokalong fertilizers obtained by drying bat droppings, which you can use throughout the entire cultivation cycle (for both growth and bloom) at home or outdoors (indoor and outdoor). This “superfertilizer” has a low salt index, is full of natural ingredients and rich in micronutrients and enzymes that intensively strengthen the root zone. It is sold in 6 different pack sizes, from half-kilogram to 25 kilograms. Interested in what elements such 100% bat guano contains? Detailed information is in the product description Guanokalong prášek - netopýří trus (Powder). High-quality bat guano does not contain viable weed seeds. Some growers, especially outdoor growers and farmers, prefer pelletized form of bat droppings — Guanokalong granule (Pellets). Pellets are less prone to wind dispersion compared to powder. A major advantage of these fertilizers is also their fast action, which makes targeted growth adjustments easier in practice.

Regarding pellets made from bat droppings, an interesting alternative is also a mixture of pellets and humic acids — Guanokalong Guano Black (Black Pellets). Humic acids help plants absorb essential nutrients more effectively. You can read more in the dedicated article Fulvic and humic acids: importance and use in plant nutrition. The gradual nutrient release of this product, lasting about three to six months, eliminates the risk of plant burning due to overfertilization, which is thus practically impossible. Enzymes, calcium and magnesium support rich soil life. The Guanokalong Guano Black pellets also make transplanting plants easier for growers.

It should be added that natural fertilizers based on bat guano provide growers with the same benefits in soil cultivation as the substrate mentioned above. Again you can expect natural protection against bacterial infections, no expiration date to worry about, no unpleasant smell, and a wonderful organic harvest whether you grow fruits, vegetables or medicinal herbs. Guanokalong goes even further in terms of highly effective but purely natural plant nutrition...
Proof of this is another new product for indoor and outdoor use throughout the cultivation cycle: Guanokalong Veg Pearls. Made from a plant extract of sugarcane, it will literally amaze you with the plant growth after application! Plants also require less frequent watering. Besides the economic aspect, there are other reasons growers like it:
- Increased plant resistance to stress. (See the dedicated article: Stress harms plants too — Abiotic stresses of plants.)
- Easy application (spreading) thanks to the rounded shape of each bead.
- Longer soil life.
- No leaching of minerals.

Guanokalong Complete Organics is a comprehensive organic fertilizer of the “all‑in‑one” type. What does that mean?
- An ideal natural fertilizer for growth and bloom if you don’t want to worry too much about soil conditions for healthy plant development, whether in a pot or in a garden bed.
- What is this balanced mix made of?
- powdered Guanokalong
- seaweed powder
- palm ash
- vegetative powder
- fish meal
- volcanic clay
- Thanks to this the final composition is rich in important micronutrients, but also amino acids, humic acids and enzymes.
- All active ingredients contained in the complex composition of Guanokalong Complete Organics are released and activated by normal fermentation, so when used in soil they trigger natural processes that improve soil properties and support the soil microflora.
So if your plants are clearly stressed or your soil is poor in nutrients, Complete Organics will serve you better than many chemical and mineral fertilizers.

Other Guanokalong products have proven themselves as natural boosters:
- Guanokalong Palm Tree Ash is a 100% VEGAN product based on palm ash. This raw material is rich in basic nutrients — nitrogen, phosphorus and potassium (N-P-K). Other elements in palm ash naturally regulate soil acidity. This ecologically sourced palm ash can be considered a highly effective flowering booster. It releases nutrients directly, so dose with increased caution. Experienced growers like to use this product together with powdered bat guano for vegetable cultivation (especially tomatoes) in the garden.
- Guanokalong Seaweed Powder is a fully vegan additive, suitable for any natural fertilizer mix. This seaweed powder excels at stimulating beneficial soil microorganisms. The trace elements contained in seaweed powder are ideal for strengthening the soil and promoting better plant growth. Another well‑known property of seaweed powder is its excellent moisture retention. By applying it you also help balance soil moisture in the growing environment. The growth hormones it contains give an additional boost to the root system, helping plants to grow faster. Ultimately it serves as a natural growth stimulator for both indoor and outdoor use.

Liquid fertilizers (liquid fertilizers)
Dry fertilizing is now followed by basic and supplementary liquid fertilizers:
- The basic liquid Guanokalong fertilizers are notable for their lack of phosphorus. The pair of products, delivering extra stimulation of microbial life in the soil with prolonged effect, contain only nitrogen and potassium in a suitable ratio to ensure vigorous plant growth or the formation of abundant flowers and large, juicy fruits. These basic fertilizers for growth and bloom have a low salt index and therefore do not place unnecessary stress on plant roots. You can use them when growing herbs outdoors as well as if you have a grow tent.
- KAlong Grow: a vegan basic plant nutrition with increased nitrogen content for the vegetative (growth) phase.
- KAlong Bloom: a vegan basic plant nutrition with increased potassium content for the flowering phase.

- Guanokalong liquid boosters
- Guanokalong Extract is a liquid flavor enhancer for grown crops full of purely natural ingredients based on 100% bat droppings. If you do not grow plants in soil or in coconut, the liquid extract is the solution for you. This product is compatible with all growing methods and systems both outdoors and indoors! What to expect after application? Better taste, overall quality and yield of your plants together with the benefits that characterize the whole Guanokalong range (gradual nutrient release reducing the risk of irreversible plant damage from overfertilization to an absolute minimum, additional protection against bacterial infections, root zone support, etc.).
- BatBoost is characterized by a high potassium content. Nitrogen (N) concentration is below 2%. This liquid booster is suitable for every cultivation system. What is it made of? A balanced mix of the above extract and palm ash, plus the beneficial effects of humic acids, helping growers to achieve better yields in every respect.
- Seaweed Liquid is the liquid variant of the natural stimulator based on cold-processed seaweed Seaweed Powder.

OUR TIP: For the best results in organic soil cultivation, apply Guanokalong fertilizers according to the clear dosing charts provided directly by the manufacturer.
Interested in products from the Dutch brand Guanokalong? We are always happy to advise you on size selection or suitable combinations of specific products based on your individual needs and plans at the usual email address info@higarden.cz.
We also recommend these products:
- Circulation fans
- Aerated plastic pots HERCULES
- Hydroton - AGRO expanded clay 4‑8 mm, 1l
Further reading:
- Do you know what VPD is? Discover the key to perfect conditions for plant development
- How to choose a propagator and what to equip it with?
- WHISPERBLOWER: professional fans with unbeatable efficiency