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Trillium grandiflorum

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Plant types and subtypes: Perennials

Light Requirements: part-shade, shade

Water Use: medium

Soil Moisture: moist

Soil Description: acid, rich, loam

Height: 12"-18"

Bloom Time: April, May, June

Bloom Color: white, pink

Leaf Color: green

Hardiness Zone: 3, 4, 5, 6, 7

Additional Tags: clumping, ornamental foliage, shade garden plant, woodland plant

Trillium grandiflorum (snow trillium)
  • Trillium grandiflorum (snow trillium)
  • Trillium grandiflorum (snow trillium)
  • Trillium grandiflorum (snow trillium)
  • Trillium grandiflorum (snow trillium)

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Description

Trillium grandiflorum

Also known as:

white trillium

,

snow trillium

,

large flower wakerobin

,

large-flowered trillium

,

large white trillium

Scientific Synonyms:

Description

White trillium is the largest species of the Trillium genus, hence the botanical name grandiflorum. The large, single flower appears atop a robust stem, above three veined, spade-like leaves. It is similar to, but larger than the Trillium flexipes. The blooms are long lasting, gradually turning to shades of pink as they age.

Cultivation

A woodland wild flower, Trillium grandiflorum will tolerate a moderate amount of direct sun, making it a good candidate for a shade garden margin where it will thrive in part-shade. It prefers rich, organic, acid, well drained soil that remains consistently moist. Best planted in groups, it blooms in late spring, April to June. One of the hardiest Trilliums: zones 3-7

Propagation

Established clumps can be divided in summer. Slow to propagate from seed.

Additional Notes

Once established, white trillium will form a clump with an increasing number of flowers. Mulching will help maintain adequate moisture and acidity levels. All members of the Trillium genus have leaves and petals that grow in multiples of three, hence their botanical name.

Native Range & Classification

Recorded County Distribution: USDA data

Native Range:
AL, AR, GA, IA, IL, IN, KY, MD, MI, MN, MO, MS, NC, NY, OH, PA, SD, TN, VA, WI, WV

USDA Endangered Status:

  • Endangered: ME
  • Exploitably Vulnerable: NY

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision Spermatophyta Seed plants
Division Magnoliophyta Flowering plants
Class Liliopsida Monocotyledons
Subclass Liliidae
Order Liliales
Family Liliaceae Lily family
Genus Trillium trillium
Species Trillium grandiflorum white trillium