| Scientific Name: | Trillium grandiflorum |
| Common Name: | great white trillium |
| Family Name: | Melanthiaceae |
| Origin: | Canada - eastern, U.S. - northeast |
| Hardiness Zone: | Zone 5: (-29 to -23 °C) |
| Plant Type: | Herbaceous perennial |
| Mature Size: | 0.2 - 0.4m x 0.1 - 0.3m (height x width) |
| Habit: | Spreading, Upright |
| Form: | Oval - horizontal |
| Texture: | Coarse |
| Landscape Uses: | Spring interest, Woodland margin |
| Exposure: | Filtered shade, Deep shade |
| Soil or Media: | Humus rich, Well-drained |
| Leaves: | Simple, Whorled, Soft flexible, Heavily veined, Glabrous, Ovate, Entire, Undulate (wavy) |
| Flowers: | Flowers solitary, White, Pink, Apr-May |
| Fruit: | Capsule, Green, Brown, May-Jun |
| Key ID Features: | |
| Spreading by short rhizomes; leaves sessile, a whorl of 3 on top of a smooth green stem, ovate, die back in summer; flower about 8cm wide, petals white fading to pink, margins wavy, most 4-7cm long x 2-4cm wide; capsules rounded with six slight ridges, green to brown. | |