Grand collomia is a showy annual wildflower in the phlox family. It is native to the western United States and is locally common in many locations. Grand collomia has clusters of tubular, flat-faced flowers that range in color from yellow, white, to orange. The stamens are tipped with striking blue-colored anthers. Grand collomia prefers dry to medium soil with good drainage and full to part sun. It tolerates a wide range of habitat types, often in open woods and clearings, meadows, forest edges, and chaparral. Grand collomia will self-sow in areas with open ground. This taprooted species is best direct sown to limit root disturbance. Blooms in spring and is highly attractive to many pollinators, especially bees. The genus name Collomia comes from the Greek word meaning “glue,” a reference to the sticky seeds. The specific epithet, “grandiflora,” translates to large-flowered.
Grand collomia (Collomia gradiflora) seed packets contain approximately 180 seeds.
Seed Germination Instructions
No pretreatment required. Sow outside in fall to early spring.