How to Grow Duckweed for Feed


Duckweed is the smallest of aquatic flowering plants, notes Iowa State University. Duckweed reproduces by budding and will cover the entire surface of a pond if left to grow on its own. Small quantities of duckweed feed fish and other aquatic wildlife, but a large amount of duckweed will cover the surface of a pond, reducing oxygen levels and blocking out light. When growing duckweed for feed, the crop must be contained to reduce damage to the ecosystem.

Step 1

Collect duckweed seed from surrounding pond areas. Collecting duckweed from local ponds ensures the duckweed is adapted to the local area, says the World Bank.

Step 2

Place a bamboo divide in a fresh water pond to reduce the spread of duckweed from wind. Duckweed is highly invasive, notes Iowa State University, and will spread readily if left to grow.

Step 3

Add the duckweed seed to the containment area in a place with partial sunlight. Add the duckweed seed at a rate 21 to 32 oz for each 10 square feet (600 to 900g per square meter) for best results.

Step 4

Check on the duckweed seed after a week. Do not add fertilizer as the duckweed will recover and begin growing around this time.

Step 5

Collect duckweed with a fine mesh net screen.

Things You'll Need

  • Duckweed seed Containment ring Mesh net


  • Iowa State University: Duckweed
  • Missouri Botanical Garden: Growing Duckweed
  • The World Bank: Duckweed Aquaculture
Keywords: Duckweed feed, Growing duckweed, Duckweed pond

About this Author

Cleveland Van Cecil is a freelancer writer specializing in technology. He has been a freelance writer for three years and has published extensively on, writing articles on subjects as diverse as boat motors and hydroponic gardening. Van Cecil has a Bachelor of Arts in liberal arts from Baldwin-Wallace College.