Herbertia lahue, commonly known as the prairie nymph or blue-eyed grass (though not a true grass), is a delicate and charming perennial wildflower in the iris family (Iridaceae), native to Texas, Louisiana and tropical America. This small yet striking plant typically grows in open prairies, meadows, and grassy slopes, thriving in well-drained soils with full sun to partial shade. It reaches about 6 to 12 inches in height and is recognized for its narrow, grass-like leaves and its vivid, violet-blue to purplish flowers, which open in the morning and often close by afternoon, giving the plant a fleeting, ephemeral beauty. Each flower features three broad, rounded petals and a bright yellow center, creating a striking contrast that attracts pollinators like bees and butterflies. Herbertia lahue blooms mainly in spring and early summer, providing a subtle yet colorful display that contributes to the biodiversity and visual appeal of native grasslands. Though not commonly used in traditional horticulture, it holds ecological importance in native prairie restoration and is admired by wildflower enthusiasts for its resilience, understated elegance, and seasonal charm.