Trillium luteum, sometimes commonly called yellow trillium, grows up to 15″ high. An unbranched, naked stem is topped by three, evenly-spaced, sessile, lanceolate to rounded, dark green, hosta-like leaves (4″ long) that are often mottled. The flower (2″ high) features three erect, yellow petals and three narrow, greenish sepals and appears stalkless atop the center of the three-leaf whorl. Flowers may have a faint lemon scent. A clump-forming plant with stems arising from thick, underground rhizomes which will spread slowly if left undisturbed. Foliage will usually die to the ground by mid-summer, particularly if the soil is allowed to dry out. This species is very similar to Trillium viride.
Genus name comes from the Latin word tres meaning three in reference to the leaves, petals and sepals all coming in groups of three.
Specific epithet means yellow.
The trillium is a simple, graceful perennial that is one of the most familiar and beloved of the spring woodland wildflowers. Leaves, petals and sepals of all trilliums come in groups of three.
Easily grown in rich, humusy, medium moisture, well-drained soil in part shade to full shade. Needs regular watering. Rhizomatous plant that is difficult to propagate from seed.
No serious insect or disease problems. This flower does not transplant well and should not be dug in the wild.
A classic spring-blooming, woodland wildflower. Excellent when massed in a shaded woodland garden, naturalized area or wildflower garden. Mixes well with other spring wildflowers and ferns. Not recommended for the perennial border.
Type: Herbaceous perennial
Native Range: Southeastern United States
Zone: 4 to 8
Height: 1.00 to 1.50 feet
Spread: 1.00 to 1.50 feet
Bloom Time: April to May
Bloom Description: Yellow
Sun: Part shade to full shade
Flower: Showy, Fragrant