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Western Blue-eyed Grass

Sisyrinchium bellum

Also listed as Sisyrinchium eastwoodiae, Sisyrinchium greenei

herbaceous☀️ full sun💧 low water❄ Hardy: Zone 7a – Zone 10b

Climate Match for your location

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A delicate California native perennial with narrow, grass-like foliage and small, bright blue flowers with yellow centers. It thrives in dry conditions and is excellent for rock gardens and native plantings.

Why grow it

Western blue-eyed grass offers a low-maintenance alternative to turf or bedding plants in dry, well-drained settings where many ornamentals struggle. Unlike some ornamental grasses, its fine texture and modest height (typically under 12 inches) make it suitable for rock gardens, borders, and water-wise landscapes without dominating neighboring plants. It provides early spring color and attracts pollinators while requiring minimal fertilizer or supplemental water once established.

Watch out for

Plants may decline in heavy clay or poorly drained soils despite drought tolerance in ideal conditions. In regions with summer humidity or frequent overhead watering, fungal issues can occur, so spacing and air circulation deserve attention. Seeds readily self-sow in favorable conditions, which some gardeners find useful for filling space but others may need to manage.

Overview

Form
Upright
Growth Rate
moderate
Size
0.5–1.5′ tall × 0.5–1′ wide
Dormancy
evergreen
Family
Iridaceae
Pollinators & beneficial insects

Native to the United States

Native Range

California native

Native to: California, Oregon

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SpringSummer

Notable Cultivars

The species itself is the most commonly cultivated form; it is prized for its consistent blue flowers and native California heritage.

Similar ground covers you might consider:

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Companion Planting

Plants well with