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Common Duckweed

Lemna minor

In the Carolinas and Georgia, found in still to slowly moving waters of ponds, lakes, beaver ponds, and swamps. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

27
Good

Native to Louisiana (estimated). How scores work Is it native here?

Profile 100%

Height
3 inches
Spread
1–3 feet
Light
Full sun, Partial shade
Soil moisture
Wet to standing water

Space about 2 ft apart from its recorded spread, about 25 per 100 sq ft. Enter your bed size for a count

Will it fit your yard?

At a glance

Life cycle
Perennial
Bloom
Summer
Fruiting season
Summer

Not yet recorded · Leaves

Recorded in 21 Louisiana parishes.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 2

Swamps

The Land of Evangeline
Joseph Rusling Meeker, The Land of Evangeline (1874): moss-hung trees over a still bayou in Louisiana swamp forest. Regional view: the painting does not name the exact site. Louisiana bayou country (Meeker, The Land of Evangeline, 1874)The Land of Evangeline, Joseph Rusling Meeker, 1874. Public domain. Source record. scaled to 1280 x 923 by the Wikimedia thumbnailer from 4096 x 2953; no crop or other change

Ponds, lakes and their shores

Still water and its edges: ponds, lakes, millponds and reservoirs.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Louisiana. Shared habitat, not food. 106 animals.

Widespread birds also seen here (34)

Found in many habitats here, so not listed above.

All wildlife of Louisiana

Ecological relationships

Who uses this plant?

What these records mean

3CaterpillarsGenus host records with ranges including LA

Genus host records with ranges including LA · Lemna

  • Elophila obliteralisWaterlily Leafcutter Moth
  • Elophila tinealisBlack Duckweed Moth
  • Neocataclysta magnificalisScrollwork Pyralid
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
0BeesSoutheastern regional records
0Specialist beesPollen specialists
14BirdsRecorded eating Lemna in Louisiana

Diet records by plant genus, from studies across North America. Not a record from this state. Birds whose range includes Louisiana, most records first.

Show all 14
Avian Diet Database (Hurlbert Lab)

Direct food only. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Birds that eat Lemna 14

Diet records by plant genus, from studies across North America. Not a record from this state. Avian Diet Database (Hurlbert Lab), CC0 1.0.

Growing and identification

Plant details

Family
Araceae
Hardiness
Zones 4a–10b
Flower color
Green or white
Growth rate
Rapid
Growth habit
Single crown
Foliage color
Green
Fruit begins
Summer
Fruit ends
Summer

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope
  • Bloom · “Summer” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Flower color · “Green or white” · NC Extension Plant Toolbox (ranked first; USDA PLANTS differs)
  • Foliage color · “Green” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Fruit begins · “Summer” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Fruit ends · “Summer” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Growth habit · “Single crown” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Growth rate · “Rapid” · USDA PLANTS · Nationwide species characteristics; local growing conditions may vary
  • Hardiness · “Zones 4a–10b” · NC Extension Plant Toolbox
  • Height · “3 inches” · NC Extension Plant Toolbox
  • Life cycle · “Perennial” · NC Extension Plant Toolbox
  • Light · “Full sun (6 or more hours of direct sunlight a day); Partial shade (direct sunlight only part of the day, 2-6 hours)” · NC Extension Plant Toolbox
  • Soil · “Frequent standing water” · NC Extension Plant Toolbox
  • Spread · “1–3 feet” · NC Extension Plant Toolbox

Conservation status

Louisiana rankSNR
Global rankG5
LA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources