Triteleia grandiflora, commonly known as largeflower triteleia, is a perennial herb that emerges from a corm. It is native to the grasslands, open woodlands, and meadows of western North America, specifically from British Columbia to California and eastward to Idaho, Montana, and Utah, with isolated populations in Wyoming and Colorado. This species typically grows two or three basal leaves that can reach up to 28 inches in length and produces a smooth, erect stem that can stand up to 30 inches tall. The plant is known for its attractive umbel-like clusters of flowers, which bloom from late spring to early summer and range in color from deep blue to white, each with a funnel-shaped corolla up to 1 inch long. The flowers are particularly showy and can add a splash of color to garden settings.

Largeflower triteleia is valued for its ornamental flowers, which can be used in border plantings, rock gardens, and as cut flowers due to their long vase life. It is relatively low-maintenance, requiring well-drained soil and full sun to part shade. While the corm is edible and was historically consumed by Native Americans and settlers, it also provides food for wildlife such as rodents and livestock. The plant is generally resistant to pests and diseases but can be susceptible to rot if overwatered or planted in poorly drained soils. There are no significant problems with aggressive roots or invasiveness.CC BY-SA 4.0