Linanthus grandiflorus,
Mountain Phlox (Native)

Annual, 1 – 2 ft. tall. Blooms in late spring with purplish/pink flowers. Adapted to most soils, low water requirements, likes full-sun and is very easy to establish. Used in wildflower plantings. Plant anytime 1/8 inch deep. 900,000 seeds/lb.

USDA: Plant Profile