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Nodding Onion

Allium cernuum

Generally in open woodlands or around outcrops of shale, mafic, ultramafic, or calcareous rocks, in the mountains at low elevations. Weakley, Flora of the Southeastern United States (2025), South Central edition What its natural habitat tells you

67
Strong

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

Profile 100%

Height
6 inches–2 feet
Spread
4–12 inches
Light
Full sun, Partial shade
Soil moisture
Somewhat dry to moist

Space about 1 ft apart from its recorded spread, about 100 per 100 sq ft. Enter your bed size for a count

Will it fit your yard?

At a glance

Life cycle
Perennial, from a bulb
Bloom
Summer
Fruiting season
August to October

Not yet recorded · Leaves

Recorded in 9 Alabama counties.

Natural habitats

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

1 of 3

Glades, barrens and outcrops on limestone

Cedar Glade Number 5, Chickamauga and Chattanooga NMP, Catoosa County
Limestone cedar glade. Shown: Cedar Glade Number 5, Chickamauga and Chattanooga National Military Park, Catoosa County, Georgia, a neighboring state.Cedar Glade Number 5, Chickamauga and Chattanooga NMP, Catoosa County, Alan M. Cressler / U.S. Geological Survey, undated. Public domain. Source record.

Forests and woodlands

Trail on Little Kennesaw Mountain.
Named place / source context. Shown: Kennesaw Mountain National Battlefield Park, Georgia, a neighboring state.Trail on Little Kennesaw Mountain., Unidentified in HFC record, undated. Public domain. Source record.

Glades, barrens and outcrops on mafic or serpentine rock

Open, thin-soil openings, outcrops and cliffs on dark, magnesium- or iron-rich rock such as serpentine, diabase or gabbro.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Alabama. Shared habitat, not food. 118 animals.

All wildlife of Alabama

Ecological relationships

Who uses this plant?

What these records mean

17CaterpillarsGenus host records with ranges including AL

Genus host records with ranges including AL · Allium

  • Agrotis gladiariaSwordsman Dart, Clay-Backed Cut-Worm
  • Agrotis ipsilonIpsilon Dart, Black Cutworm, Greasy Cutworm
  • Agrotis malefidaRascal Dart, Pale-Sided Cut-Worm, Shagreened Cut-Worm
  • Anicla infectaGreen Cutworm Moth
  • Archips argyrospilaFruit-Tree Leafroller Moth
  • Ascia monusteGreat Southern White
  • Chrysodeixis includensSoybean Looper Moth
  • Elasmopalpus lignosellaLesser Cornstalk Borer
  • Estigmene acreaSalt Marsh Moth, Acrea Moth
  • Feltia subterraneaSubterranean Dart, Granulate Cutworm
Show all 17
  • Mythimna unipunctaArmyworm Moth, White Speck
  • Spilosoma virginicaVirginian Tiger Moth, Yellow Woolybear Moth, Yellow Bear
  • Spodoptera eridaniaSouthern Armyworm Moth
  • Spodoptera frugiperdaFall Armyworm Moth
  • Spodoptera latifasciaOrange-Striped Armyworm, Velvet Armyworm Moth
  • Spodoptera ornithogalliYellow-Striped Armyworm Moth, Cotton Cutworm
  • Xestia dolosaGreater Black-Letter Dart, Greater Spotted Cutworm
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
20BeesSoutheastern regional records

Southeastern regional records · Allium

Individual names are not available yet.

Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
0Specialist beesPollen specialists
2BirdsRecorded genus food-resource interactions; not a state feeding claim

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

  • Alectoris chukarChukar
  • 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
Alliaceae
Hardiness
Zones 4a–8b
Soil pH
Neutral to alkaline
Flower color
Pink, purple or white
Fruit begins
August
Fruit ends
October

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

Growing sources and scope
Also known as

Allium cernuum var. cernuum

Conservation status

Alabama rankSNR
Global rankG5
AL statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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How to check your spot

Growing cautions

For planning only; these do not change the score or Fit.

Sources