Great white trillium Trillium grandiflorum Photo/Illustration: Jennifer Brown 1 2 3 4 5 6 7 8 9 10 11 Great white trillium (Trillium grandiflorum) TRILL-ee-um gran-dih-FLOOR-um Genus: Trillium This showy spring-blooming trillium has large white blossoms up to 3 inches long, which fade to soft pink and from cup-shaped to open and recurved. Its veined leaves are solid green, and it grows to 18 inches tall and about half as wide. Noteworthy Characteristics: Most trilliums are native to woodlands and scrub of North America. They make an elegant understory species planted in groups in a woodland or shady, naturalized area. Since trilliums go dormant in summer, plant them with other shade-loving perennials to share their place until they reappear the following spring. Care: Grow in rich, moist, but well-drained soil with a neutral to acidic pH. Plant in part to full shade and provide an annual mulch of rich organic matter. Propagation: Trilliums propagate readily by division (when plants are dormant in late summer or early fall). Problems: Smut, rust, fungal spots, slugs, snails. Overview Height 1 ft. to 3 ft. Spread 6 in. to 12 in. Growth Habit Clumps Growth Pace Moderate Grower Light Part Shade to Full Shade Moisture Medium Moisture Maintenance Low Characteristics Native, Self Seeds, Showy Flowers Bloom Time Spring Flower Color White Uses Ground Covers Style Woodland Garden Seasonal Interest Spring Interest Type Perennials Trillium grandiflorumView the discussion thread.