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Large-flowered Trillium

Trillium grandiflorum

Found in rich coves and moist slopes, also less typically on ridges over "rich" rock types. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

25
Good

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

Profile 100%

Height
1–3 feet
Spread
9 inches–1 foot
Light
Dappled sunlight, Deep shade, Partial shade
Soil moisture
Usually 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
Bloom
April to May
Fruiting season
July to August

Not yet recorded · Leaves

Recorded in 24 West 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

Moist forests

Forests on moist but not wet ground, such as rich slopes and ravines.

Rich cove forests

Sheltered, moist mountain hollows and lower slopes with deep, fertile soil.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in West Virginia. Shared habitat, not food. 111 animals.

All wildlife of West Virginia

Ecological relationships

Who uses this plant?

What these records mean

2CaterpillarsGenus host records with ranges including WV

Genus host records with ranges including WV · Trillium

  • Clepsis melaleucanusBlack-Patched Clepsis, Trillium Tortrix
  • Euplexia benesimilisAmerican Angle Shades
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
1BeesSoutheastern regional records

Southeastern regional records · Trillium

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
—BirdsRecorded genus food-resource interactions; not a state feeding claim
2AntsRecorded seed interactions
  • Aphaenogaster rudis
  • Myrmica unknown

Aphaenogaster rudis: Seed dispersal.

Myrmica unknown: Seed dispersal.

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

Growing and identification

Plant details

Family
Trilliaceae
Hardiness
Zones 4a–8b
Soil pH
Acidic to neutral
Flower color
Pink or white
Fruit begins
July
Fruit ends
August

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

Growing sources and scope
Also known as

Great White Trillium; Large Flower White Trillium; Large flowered Trillium

Conservation status

West Virginia rankS5
Global rankG5
WV 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.

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How to check your spot

Growing cautions

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

Sources