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Living Materials
Information Duckweed
(Lemna
minor)
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Materials |
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3 holding tanks (1-gal plastic milk jugs
cut in half or cake pans work well) |
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4–5 liters of water |
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300 duckweed plants |
Procedure
The holding tanks do not need to be deep (1–2 inches is plenty), but they do need to have enough surface area so that the
plants form a single layer on the water’s surface. Overcrowding will block light and may kill some of the plants. Add
water to the tanks until it is
1–2 inches deep.
Duckweed is hardy and very easy to maintain. Open the shipping container immediately
upon arrival and place the duckweed in
the holding tanks until you are ready to distribute it to the class.
Place the holding tanks in a brightly lit area
or provide artificial illumination.
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