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Loose Water-milfoil

Myriophyllum laxum

Found in limesink depression ponds (dolines), spring-runs, rarely also in lakes. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

30
Good

Native to Virginia. How scores work Is it native here?

Profile 76%

Light
Full sun
Soil moisture
Wet to standing water
Will it fit your yard?

At a glance

Life cycle
Perennial
Bloom
June to October

Not yet recorded · Height · Spread · Leaves

Height: NC species account not read yet.

Spread and leaves: no source found yet.

This plant is missing most of its facts, so Quercus is looking them up in old botany books.

Recorded in 2 Virginia counties.

Natural habitats

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

1 of 2

Ponds, lakes and their shores

Yellow butterwort beside a moss-hung coastal pond
Regional / representative. Shown: Southern coastal pond margins, Florida and Louisiana to North Carolina; state not identified, a neighboring state.Yellow butterwort beside a moss-hung coastal pond, Marian Ellis Rowan, 1901. Public domain. Source record.

Depression ponds and limesinks

Shallow ponds in Coastal Plain depressions, such as limesinks and the ponds in some Carolina bays, that rise and fall with the seasons.

All habitats

Also found with this plant

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

All wildlife of Virginia

Ecological relationships

Who uses this plant?

What these records mean

4CaterpillarsGenus host records with ranges including VA

Genus host records with ranges including VA · Myriophyllum

  • Choristoneura parallelaParallel-Banded Leafroller, Spotted Fireworm Moth
  • Elophila obliteralisWaterlily Leafcutter Moth
  • Parapoynx allionealisWatermilfoil Leafcutter, Bladderwort Casemaker
  • Parapoynx badiusalisChestnut-Marked Pondweed Moth
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
0BeesSoutheastern regional records
0Specialist beesPollen specialists
7BirdsRecorded genus food-resource interactions; not a state feeding claim

Recorded genus food-resource interactions; not a state feeding claim · Myriophyllum

  • Anas platyrhynchosMallard
  • Aythya affinisLesser Scaup
  • Aythya collarisRing-necked Duck
  • Cygnus olorMute Swan
  • Fulica americanaAmerican Coot
  • Mareca americanaAmerican Wigeon
  • Mareca streperaGadwall
Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)

Direct food only: birds recorded eating this genus across North America. 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

Growing and identification

Plant details

Family
Haloragaceae
Flower color
Pink

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

Growing sources and scope
Also known as

Loose Water milfoil

Conservation status

Virginia rankSH
Global rankG3
VA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources