Dodecatheon alpinum is a broadleaf deciduous perennial bulb / corm / tuber with green foliage. In spring lavender flowers emerge. Grows well with mostly sun - mostly shade and regular water. Does well in average and well-drained soil.
Encountered in the wild at higher altitudes, from 6,000 to 12,000 feet, but seems to do just fine down here at the bottom. Rather large and showy flowers.