Perennial of the Iridaceae family, Sisyrinchium bellum is native to the west coast of North America, from California to Baja California in Mexico. It is naturally found in open meadows, chaparral edges, sunny slopes, and roadsides, from sea level up to about 2,000 meters in altitude.
It forms upright and compact clumps from 10 to 25 cm in height, composed of linear, flattened, glaucous green leaves, characteristic of the genus by their iris-like blade section — narrow and fan-shaped, they are often mistaken at rest for those of a small grass.
The flowers, with six violet-blue to deep violet tepals with a marked yellow throat, bloom at the top of slightly flattened winged stems, typical of the genus. Each flower lasts only one day, but the blooming is generous and spans several weeks. In its natural habitat, its blooming extends from March to June depending on altitude and exposure. In cultivation, it generally occurs from April to June.
In rock gardens or well-drained flowerbeds, it requires a sunny exposure and light soil, not waterlogged in winter. It readily reseeds itself, which can be both its charm and its main particularity to monitor in the garden.