States
North CarolinaTennesseeGeorgiaSouth CarolinaKentuckyAlabamaFloridaVirginia
Menu

Floating Mannagrass

Glyceria septentrionalis

Found in shallow water, wet mucky soils, floodplain sloughs, cypress ponds. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

37
Good

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

Profile 94%

Height
Up to about 6 feet
Light
Partial shade, Full shade, Full sun
Soil moisture
Moist to standing water
Will it fit your yard?

At a glance

Life cycle
Perennial
Bloom
May to June

Not yet recorded · Spread · Leaves

Recorded in 57 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.

Floodplain and bottomland forests

Forests on low ground beside rivers and streams that flood from time to time.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Virginia. Shared habitat, not food. 94 animals.

All wildlife of Virginia

Ecological relationships

Who uses this plant?

What these records mean

9CaterpillarsGenus host records with ranges including VA

Genus host records with ranges including VA · Glyceria

  • Apamea devastatorGlassy Borer, Glassy Cutworm Moth
  • Apamea dubitansDoubtful Agroperina
  • Leucania commoidesDusky Wainscot, Comma Wainscot
  • Limochores origenesCrossline Skipper
  • Mythimna oxygalaLesser Wainscot
  • Mythimna unipunctaArmyworm Moth, White Speck
  • Plusia putnamiPutnam's Looper Moth, Lempke's Gold Spot
  • Polites themistoclesTawny-Edged Skipper
  • Pseudohermonassa bicarneaPink-Spotted Dart
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
0BeesSoutheastern regional records
0Specialist beesPollen specialists
2BirdsRecorded genus food-resource interactions; not a state feeding claim

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

  • Aythya americanaRedhead
  • Meleagris gallopavoWild Turkey
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
Poaceae
Flower color
White or green

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

Growing sources and scope
Also known as

Floating Manna Grass; Northern Manna Grass

Conservation status

Virginia rankS5
Global rankG5
VA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

Will it fit your yard?

Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.

Choose a county to begin.

How to check your spot

Sources