Description
Commonly known as:
Yellow-Eyed Grass, California Yellow-Eyed Grass
Description of Plant:
Sisyrinchium californicum is a California native perennial in the iris family, admired for its bright yellow, star-shaped flowers and slender, grass-like foliage. From spring through early summer, the cheerful blooms brighten the garden while attracting native bees and other beneficial pollinators. In addition, its compact size and adaptability make it an excellent choice for rain gardens, pond edges, meadows, and native landscapes.
Growth Habit:
This clump-forming perennial grows 12–24 inches tall and 12–18 inches wide. Its upright, grass-like foliage remains attractive throughout the growing season and gradually forms larger clumps over time.
Watering Instructions:
Water regularly during establishment. Once established, provide moderate watering and keep the soil evenly moist for best performance. It tolerates occasional dry periods but flourishes with consistent moisture.
Soil Needs:
Prefers moist, well-draining soil rich in organic matter. It also adapts to clay and seasonal wet areas, making it an excellent choice for bioswales and low spots.
Sun Requirements:
Thrives in full sun to partial shade. In hotter inland areas of Southern California, afternoon shade helps maintain healthy growth.
Indoor or Outdoor Tips:
Best grown outdoors in native gardens, meadow plantings, rain gardens, and along ponds or streams. Divide mature clumps every few years to maintain vigor and create additional plants.
Perennial or Annual:
Perennial in Southern California.
Additional Tips:
Yellow-Eyed Grass provides an early-season nectar source for native pollinators and adds a natural meadow appearance to the landscape. Its tidy growth habit makes it an excellent companion for other California native perennials, especially blue-eyed grass, monkeyflowers, and sedges.
