Wednesday, February 28Food Security Matters

Azolla and Duckweed Farming: How to Grow and Cultivate Azolla

Azolla and duckweed farming and cultivation are gaining popularity in the Philippines and many backyard growers are making money by selling packs of duckweed and Azolla and used as animal feeds. If you are looking for information on how to make a profit with Azolla and duckweed farming, continue reading.

Azolla and duckweed are two different breeds of aquatic plants but they require the same farming and cultivation techniques and can be cultivated together.


What is Azolla

Azolla is a genus of aquatic ferns that can be found on every continent except for Antarctica. The plants are small, with leaves that measure between 0.5 and 2 centimeters in length. Azolla species are characterized by their symbiotic relationship with the cyanobacterium Anabaena azollae. This bacteria fixes nitrogen gas from the air, making it available to the plant as a nutrient. In return, the plant provides the bacteria with a place to live and CO2 for photosynthesis.

Azolla plants grow quickly, doubling their biomass in as little as four days. This makes them an attractive option for farming and agriculture. In addition to being used as animal feed and fertilizer, Azolla has several other uses. The plants can be used in bioremediation to remove heavy metals from water, and they have also been studied as a potential source of biofuel.

What is Duckweed

Duckweed is a small, aquatic plant that grows on the surface of water bodies. Duckweed usually grows in standing water and is more widespread during the warmest months of the year. This aquatic plant is not rooted in the lake bottom, so it moves easily when the wind blows it or there is a current in the water.

Duckweed can form a bright green “blanket” over the surface of small waterbodies, which some find unappealing. Despite its looks, this native plant benefits wildlife and poses no human or environmental health risks. Duckweed is a great food source for ducks and geese, and it can help prevent unwanted algae blooms.

Advantages of Azolla and Duckweed Farming

Azolla and duckweed are highly nutritious food sources for both humans and animals. They are also a very efficient fertilizer, providing up to 10 times more nitrogen than other common fertilizers such as urea. Azolla and duckweed can help to improve water quality by reducing levels of ammonia and nitrates. They also reduce the amount of methane produced by livestock.

Azolla and Duckweed Farming: The Steps in Growing Azolla and Duckweed

Azolla and duckweed are a type of water ferns that grow in many parts of the world. They can be found in ponds, lakes, and other freshwater habitats. Both plants are very fast-growing plants and can double their biomass in as little as two days. This makes them an ideal plant for farming and cultivating.

Several steps must be followed when farming azolla and duckweed. First, you need to find a suitable location. Azolla and duckweed grow best in warm climates with plenty of sunlight. They also need still water that is at least 2 feet deep. Once you have found a suitable location, you need to prepare the area by clearing any vegetation or debris from the site.

Next, you need to add the plants to the water. This can be done by either purchasing live plants from a nursery or by collecting them from the wild. If you are collecting them from the wild, make sure to only take a small amount so that you do not damage the local ecosystem.

Once you have added Azolla and duckweed to the water, they will start to grow very quickly. You will need to monitor the plants closely and remove any dead or dying leaves or stems as they occur. Azolla can also reproduce very rapidly so you may need to thin out the population periodically to prevent overcrowding.

With proper care and management, Azolla and duckweed can provide many benefits. It can be used as food for livestock, fish, and poultry. It can also be used as an organic fertilizer.

How to Cultivate Azolla and Duckweed

Azolla is a small, floating fern that is often used as a biofertilizer in rice paddies. It can also be used as fodder for livestock, and as green manure. Azolla is easy to cultivate and can be grown in almost any climate.

To cultivate azolla and duckweed, you will need:

  • A container or pond in which to grow the plants
  • Water
  • Azolla and duckweed seeds

Take note that for better results, you may need to separate Azolla from duckweed as some customers need only Azolla and some need only duckweed so by separating them from the start, you will not need to separate and sort them during the harvesting time.

To start growing azolla, fill your container or pond with water. Make sure the water is shallow enough that the azolla plants will be able to float on the surface. Add some azolla seeds to the water and wait for them to germinate. Once the plants have germinated, they will begin to reproduce rapidly. You can harvest the azolla when it reaches a few inches in height.


Once you have harvested your Azolla and duckweed, there are a few different ways that you can use it. Firstly, both can be used as a biofertilizer. This is because Azolla and duckweed contain high levels of nitrogen, which is essential for plant growth. Secondly, Azolla can be used as animal feed. This is because Azolla is high in protein and other nutrients, which are essential for animals. Finally, Azolla and duckweed can be used to make biogas. This is because both plants contain high levels of methane, which can be used to generate electricity.

Azolla and duckweed can be harvested every 3 days depending on the size of your plantation.

Marketing Strategies for Selling Azolla and Duckweed

Azolla and duckweed farming can really be profitable with minimal work needed. In the Philippines, some people are making money by selling online as both aquatic plants are in high demand for backyard fish and poultry growers.

Questions related to Azolla and Duckweed Farming

How fast does an Azolla grow?

Under optimum conditions, azolla’s growth spreads across the dam surface until it covers the surface of the water in a dense cover. Azolla can double its leaf area in seven days if conditions of high nutrient levels and water temperatures persist.

What are the benefits of Azolla?

Azolla has several pharmacological effects and can be used as an antioxidant, immune-stimulating, hepato-protective, phytoremediation, bioremediation, and also as nutritious material. Azolla contains vitamins (B12, beta carotene, vitamin A), biopolymers, minerals, and amino acids.

How to grow Azolla in the Philippines?

Azolla plants can be cultivated in ponds or purpose-built pits and will spread rapidly. If grown in water, there should be little to no current as strong water currents can damage the fronds of the plants. Azolla will grow best in standing water which is between 5 and 12 cm (2.0-4.7 in) deep with a pH between 4 and 7.

Does Azolla need fertilizer?

Azolla grows rapidly – it doubles its biomass every few days. It is high in protein – up to 35 percent by mass. And it is one of the few plants that can fertilize itself – it grows in symbiosis with a photosynthetic bacterium that takes nitrogen from the atmosphere and shares it with the fern.

What is the price of 1 kg Azolla in the Philippines?

Depending on the location, backyard Azolla farmers sell Azolla from P50 to P120. It is, however, free in parts of the country where is it abundant in ricefields and swamps.

Is Azolla good for tilapia?

Azolla as a fresh feed, in combination with a food level of natural feeding, can be beneficial to fish production like tilapia.

Does Azolla attract mosquitoes?

The Azolla foliage can grow so dense that it crowds out mosquito larvae, giving the fern its common name. It also blocks sunlight from other water weeds and is used as inexpensive weed control in rice paddies in Asia.

Can we feed only Azolla for chicken?

Poultry and in particular ducks and chickens can be raised on a diet including fresh azolla. It has long been recognized as a feed for wildfowl in the USA and for domesticated ducks in China and it has been used as a feed to domestic fowl in Vietnam.

How long does it take to grow duckweed?

An individual leaf may go through 10 divisions over 10 days to several weeks before the original plant senesces. Duckweeds can double their mass in between 16 hours to 2 days under optimal nutrient availability, sunlight, and water temperature.

What is the best way to grow duckweed?

Common Duckweed grows quickly, floating on the surface of calm water. Keep the water calm with little to no current; if the water moves too much, the plant will not grow quickly. If desired, cultivate it separately in a rectangular container that is at least five inches deep, 18 inches long, and 12 inches wide

How much does duckweed yield?

The fastest-growing duckweed strain can produce about 20 grams (when dried) per square meter per day using our current prototype. That’s about 1.4 million pounds per hectare (2.47 acres) annually – 50 times what you get from corn.

Does duckweed need a lot of sunlight?

Duckweed grows in full sunlight as well as dense shade and can tolerate a wide pH range while surviving best at levels between 4.5 and 7.5. It is more cold-tolerant than other aquatic vascular plants and can tolerate temperatures as low as 7° Celsius for normal growth.

Is there a market for duckweed?

High demand from the aquaculture and animal feed industry is likely to propel the growth of the global duckweed market over the period of analysis, from 2020 to 2030. Duckweed is rapidly coming up as a highly nutritious food option for human beings as well.


Azolla farming is a great way to make some extra money, whether it be for your own personal use or as a commercial venture. With the right knowledge and strategies in place, you can ensure that your azolla farm will be successful. We hope this step-by-step guide has provided you with enough information to get started on your journey of cultivating and harvesting Azolla for profit. Good luck!

See Also:

Facebook Comments Box

Leave a Reply

Your email address will not be published. Required fields are marked *