This herbaceous perennial has a horizontal rhizome with ascending stems and terminal leaves forming a compact clumping habit. The large mid-green elliptical leaves are accompanied by yellowish-green broad funnel-shaped flowers in late spring.

Hardiness zones 4 to 7 

Trillium viride is naturally found in North America from Illinois to Missouri and growing in the understory of woodlands or on rocky hill sides at an altitude from 100-200m (600ft). 

It prefers a deeply shaded to semi-shaded protected position and grows in organic rich moist fertile sandy to light clay loams with a pH 4-7.5 and is frost tolerant but drought tender.

Green Trillium is grown for its clumping habit and flowers. It naturalises in the understory of woodland settings or is planted along shaded garden borders. It is also used in patio post and planter boxes and is suitable for moist inland regions. This perennial establishes from division in 2-3 years and is moderately long-lived. ID 3580

Trillium (TREE-lee-um) viride (VEE-ree-day) 

Liliaceae (lil-ee-AY-see-ee)
Lily Family