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yellow-eyed grass

Sisyrinchium californicum

Iridaceae · perennial · introduced

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Data Coverage 1 of 6 dimensions
Site Data
Threats
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Phenology
GDD Thresholds
Puget Sound

Yellow-eyed grass is a short-lived perennial in the iris family native to wet meadows and stream banks of California and Oregon. Growing 12-24 inches tall, it produces linear leaves and delicate yellow flowers arranged in terminal clusters. The flowers open in the morning and close by afternoon.

This species thrives in wet to moist soil in full sun to light shade and prefers consistent moisture during the growing season. Hardy to USDA zones 7-10, it is best treated as an annual in cooler regions or grown in container gardens. The plant self-seeds readily and attracts small native bees.

Quick Facts

Height
0-1 ft
Spread
0 ft
Light
Full Sun
Water
Moderate to high
Hardiness
Zone Zones 8–10
Bloom Time
may to june
Origin
Western United States