white trillium
Trillium grandiflorum (Michx.) Salisb.
White trillium rises from an underground rhizome each spring, building a simple display around the number three. Three green, leaflike bracts form a platform beneath a single flower, while three smaller green sepals support three broad white petals. Established plants expand slowly rather than racing across the forest floor. NC State Extension: Trillium grandiflorum
Botanical name
Trillium grandiflorum (Michx.) Salisb. is accepted in Melanthiaceae. VASCAN: Trillium grandiflorum
Recognizing the plant
The flower stands above the foliage on an upright or slightly leaning stalk. Its petals flare outward, have gently wavy edges and develop pink tones as they age. The oval to egg-shaped bracts show strong veins and sit at the top of an otherwise bare stem. Flowering plants commonly stand about 8–18 inches tall. The blossom is followed by a berry-like capsule, and the foliage can disappear by late summer, especially when the soil dries. Cornell Botanic Gardens: White Trillium
Bloom window
North Carolina
In North Carolina, flowering occurs in April and May. NC State Extension: Trillium grandiflorum
Native range
Native populations inhabit rich woods and thickets from southeastern Canada and the Great Lakes region south into the eastern United States, reaching Alabama and Georgia. Cornell Botanic Gardens: White Trillium
Ecological relationships
Ants carry the seeds away, eat their fleshy appendages and discard the seeds, assisting dispersal. Cornell Botanic Gardens: White Trillium
Botanical sources
- VASCAN: Trillium grandiflorum
- NC State Extension: Trillium grandiflorum
- Cornell Botanic Gardens: White Trillium
Reviewed 2026-10-11. Seasonal development varies with location and growing conditions.