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Lemna minor (Common duckweed) | NPIN

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Lemna minor

Lemna minor L.

Common duckweed

Lemnaceae (Duckweed Family)

Synonym(s): Lemna cyclostasa, Lemna minima

USDA Symbol: lemi3

USDA Native Status: L48 (N), AK (N), CAN (N)

Tiny floating plants often forming a carpetlike cover on the water’s surface.

This duckweed is more widely distrubuted in Canada and the United States and better adapted to cold climates than Lesser Duckweed (L. aequinoctialis).


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Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf: Green

Bloom Information

Bloom Color: Green
Bloom Time: Jun , Jul , Aug


USA: AK , AL , AR , AZ , CA , CO , CT , DC , DE , FL , GA , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SD , TN , TX , UT , VA , VT , WA , WI , WV , WY
Canada: AB , BC , MB , NB , NL , NS , NT , ON , PE , QC , SK , YT
Native Distribution: Throughout North America.
Native Habitat: Ponds, quiet water.

Growing Conditions

Water Use: High
Light Requirement: Sun
Soil Moisture: Wet
CaCO3 Tolerance: Medium
Aquatic: yes
Conditions Comments: When in dense colonies, can stop the proliferation of mosquito larvae by creating a barrier when they want to breathe at the surface.Very fast growth rate.


Use Wildlife: Food for ducks, tadpoles, fish and beavers. (Fleurbec)
Attracts: Birds
Deer Resistant: No


Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.

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Additional resources

USDA: Find Lemna minor in USDA Plants
FNA: Find Lemna minor in the Flora of North America (if available)
Google: Search Google for Lemna minor


Record Modified: 2007-01-01
Research By: TWC Staff

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