Philippines farmers teach you how to make fertilizer out of seaweed

[Philippines] If you live near the sea, you will probably notice that there are seaweeds that are brought to the shore by the strong waves.

For instance, during a recent visit to Bolinao, Pangasinan, we came across Rodel Tumbaga whose job is to gather the seaweeds brought to the shore by the waves. He works for a resort and his assignment is to remove the seaweeds strewn all over the beach in front of the resort.

Is there any economic use that Rodel knows about the seaweeds that he collects every day? None at all. He just piles them at the edge of the sea so the sandy beach looks clean.

Our companion, Dr. Rene Sumaoang, an expert in fermentation technology, says that the seaweeds can be fermented to make a potent foliar fertilizer. It is organic and effective plant growth promotant. You can just collect the seaweeds brought by the waves to the shore if you live near the ocean.


  1. Gather seaweeds and wash to remove dirt and sand. Finally, wash with tap water and rinse.
  2. Prepare the following materials: 10 kilos of seaweeds; one kilo of enzyme (Novatech Bio-enzyme); one kg high-grade molasses or 1.5 raw sugar (brown or muscovado sugar); clean water; glass or plastic container (about 20 liters capacity); and clean cloth.
  3. Fermentation proper:
  4. a) Grind or mash clean seaweeds.
  5. b) Add clean water to make 10 liters in volume. Put in glass or plastic container that can contain 20 liters.
  6. c) Cover with clean cloth and set aside in cool dry place with no direct sunlight.
  7. d) Allow to ferment for 30 to 45 days or until solids are totally liquefied.


  1. Filter liquefied seaweeds through fine mess or “katsa.”
  2. Dispense in one-liter plastic or glass bottles, cover tightly.
  3. Store in cool place and out of reach of children and pets.

There you are! Now you have your own potent foliar fertilizer. To start using, you can take 10 tablespoons, mix it with water in a 16-liter knapsack sprayer, then spray your favorite plants. You can use it on vegetables, fruit trees, and any other crop you grow.


Photo: Rodel Tumbaga gathering the seaweeds brought to shore by the waves. He does not know it but the seaweeds can be made into a potent foliar fertilizer.

View original article at: Fertilizer out of seaweed


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