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Broadleaf Signal-grass

Urochloa platyphylla

Found in edges of agricultural fields, other disturbed wet or seasonally moist areas. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

—
Not native

Not native to Virginia. How scores work Is it native here?

Profile 76%

Height
About 3 feet
Light
Full sun, Partial shade
Soil moisture
Moist to wet
See native alternatives

Plant this instead

Choose your county to list local plants first.

  • Eastern Narrowleaf Sedge
    Carex amphibola

    Sun: Partial shade, Full shade, Full sun. Soil: Somewhat dry to average. Flowers: Green.

    Similar growth form, height, evergreen or deciduous

  • Graceful Sedge
    Carex gracillima

    Sun: Part to full shade. Soil: Average to moist. Flowers: Green.

    Similar growth form, height, evergreen or deciduous

  • Bitter Panicgrass
    Panicum amarum

    Sun: Full sun. Soil: Dry to moist. Flowers: Pink.

    Similar growth form, height, evergreen or deciduous

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At a glance

Life cycle
Annual
Bloom
April to November
Fruiting season
Summer to fall

Not yet recorded · Spread · Leaves

Recorded in 28 Virginia counties.

Natural habitats

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

Roadsides, fields and disturbed ground

Ground opened by people: roadsides, old fields, pastures, fencerows and lots.

All habitats

Ecological relationships

Who uses this plant?

What these records mean

26CaterpillarsGenus host records with ranges including VA

Genus host records with ranges including VA · Panicum

  • Anatrytone loganDelaware Skipper, Logan Skipper, Black-Vein Skipper
  • Ancyloxypha numitorLeast Skipper
  • Dargida diffusaWheat Head Armywotm Moth
  • Dargida rubripennisThe Pink-Streak
  • Dichagyris acclivisSwitchgrass Dart, Inclined Dart
  • Haimbachia albescensSilvered Haimbachia
  • Hesperia leonardusLeonard's Skipper, Blazing Star Skipper, Pawnee Prairie Skipper, Pawnee Montane Skipper
  • Hesperia sassacusIndian Skipper
  • Hylephila phyleusFiery Skipper
  • Hypena scabraGreen Cloverworm Bomolocha, Black Snout
Show all 26
  • Lerema acciusClouded Skipper, Corn Leaf tier
  • Lethe anthedonNorthern Pearly Eye
  • Leucania adjutaAdjutant Wainscot
  • Leucania linitaReed Wainscot, Linen Wainscot
  • Lon hobomokHobomok Skipper
  • Marimatha nigrofimbriaBlack-Bordered Lemon
  • Mocis texanaTexas Mocis
  • Mythimna unipunctaArmyworm Moth, White Speck
  • Panoquina ocolaOcola Skipper, Long-Winged Skiiper
  • Papaipema nebrisStalk Borer
  • Poanes viatorBroad-Winged Skipper
  • Polites egeremetNorthern Broken-Dash
  • Polites themistoclesTawny-Edged Skipper
  • Spodoptera frugiperdaFall Armyworm Moth
  • Elachista radiantella
  • Idioglossa miraculosa
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
—BeesSoutheastern regional records
—Specialist beesPollen specialists
35BirdsRecorded genus food-resource interactions; not a state feeding claim

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

  • Acanthis flammeaCommon Redpoll
  • Agelaius phoeniceusRed-winged Blackbird
  • Aix sponsaWood Duck
  • Anas creccaGreen-winged Teal
  • Anthus rubescensAmerican Pipit
  • Anthus spragueiiSprague's Pipit
  • Aythya collarisRing-necked Duck
  • Calcarius lapponicusLapland Longspur
  • Calcarius ornatusChestnut-collared Longspur
  • Calcarius pictusSmith's Longspur
Show all 35
  • Callipepla gambeliiGambel's Quail
  • Colinus virginianusNorthern Bobwhite
  • Columbina passerinaCommon Ground Dove
  • Contopus virensEastern Wood-Pewee
  • Cyrtonyx montezumaeMontezuma Quail
  • Dendrocygna bicolorFulvous Whistling-Duck
  • Dolichonyx oryzivorusBobolink
  • Fulica americanaAmerican Coot
  • Gallinula galeataCommon Gallinule
  • Junco hyemalisDark-eyed Junco
  • Mareca streperaGadwall
  • Meleagris gallopavoWild Turkey
  • Molothrus aterBrown-headed Cowbird
  • Passer domesticusHouse Sparrow
  • Peucaea aestivalisBachman's Sparrow
  • Plectrophenax nivalisSnow Bunting
  • Pooecetes gramineusVesper Sparrow
  • Porzana carolinaSora
  • Quiscalus quisculaCommon Grackle
  • Sialia sialisEastern Bluebird
  • Spizella passerinaChipping Sparrow
  • Spizella pusillaField Sparrow
  • Turdus migratoriusAmerican Robin
  • Xanthocephalus xanthocephalusYellow-headed Blackbird
  • Zenaida macrouraMourning Dove
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

Growing and identification

Plant details

Family
Poaceae
Hardiness
Zones 7a–11b
Soil pH
Acidic to neutral
Flower color
Green
Growth rate
Moderate
Growth habit
Grows in clumps
Foliage color
Green
Fruit begins
Summer
Fruit ends
Fall

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

Growing sources and scope
Also known as

Brachiaria platyphylla; Broadleaf Signal Grass; panicgrass

Conservation status

Virginia rankSNA
Global rankG5
VA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

Sources