Photo of Sisyrinchium idahoense flower by The Watershed Nursery

Photo by The Watershed Nursery

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Sisyrinchium idahoense

Also Known As

  • Sisyrinchium bellum
  • Sisyrinchium birameum
  • Californian Blue-eyed Grass
  • Idaho Blue-eyed Grass

Plant type

perennial, grass / grass like

size

  • H: 4"-16"
  • W: 6"

planting zones

  • 4a-9b

More Options

Sisyrinchium idahoense plant details

Sisyrinchium idahoense is a semi-evergreen perennial grass (or grassy in appearance) with green foliage. In summer blue and purple flowers emerge. Features grassy texture. Grows well with sun - mostly shade and even moisture - regular water. Does well in average and lean soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Sisyrinchium idahoense

Plant type: perennial grass (or grassy in appearance)
Plant family: iridaceae
Foliage: semi-evergreen green
Mature size: 6 IN wide, 4 IN - 16 IN - tall
Flowers: blue and purple blooms in summer
Uses: bog garden, easy-to-grow, native plant

GROWING CONDITIONS for Sisyrinchium idahoense

USDA Zones: 4a - 9b
Sun exposure: sun - mostly shade
Watering frequency: even moisture - regular
Resistant to: verticillium wilt
Soil needs: average and lean

Nursery contributed plant descriptions

These lovely, dainty little iris relatives have grass-like leaves and small, deep blue, yellow-eyed flowers in spring; a ?forgiving plant? (L. Rowntree) but it prefers a moist site. S-PSh/M-W
This 1' tall perennial with 1" blue flowers is a horticulture favorite. A great plant for borders, containers, or massed on a grassy slope in the garden. This plant has small, iris-like leaves, and can be very drought tolerant but will flower longer with some summer water. It flowers January to June. Blue eyed grass prefers some moisture and good drainage, but will tolerate summer dryness Blue-eyed grass is widely distributed in California on open, grassy slopes. Plant with other grassland species and enjoy the show! Native to California and is also found outside of California, but is confined to western North America. An important flowering plant amongst other forbs and grasses in California's native grasslands. The Ohlone used an infusion of the roots and leaves as a cure for indigestion and stomach pain, and similar uses are recorded from other Native American peoples. Found in grasslands, other open places in coastal scrub or woodlands. Communitites located in Foothill Woodland, Yellow Pine Forest, Sagebrush Scrub, Wetland-riparian Between 0 and 3000 feet.
Forms small clumps of grassy, green or bluish-green foliage 6-12" high with flowering stems to 20" high. Half inch flowers are purple to bluish-purple with golden centers, blooming early to mid-spring. Reseeds freely in favorable sites. Hardy to 10 °F. California.
Blooms: spring-summer, blue/ semi-evergreen iris like foliage Zone 6-9. 6"-12", PNW, part shade-shade, moist, well drained
A West Coast - Washington too! - native that grows in mid to higher elevations in moist locations. This is very easy in our lowland gardens and if you can grow a Primrose then this is a snap. Low tuffets of green grassy blades and small blue-lavender flowers. Blue-Eyed Grass.

Gardening facts about Sisyrinchium idahoense plant

How to Grow Sisyrinchium idahoense

  • Sun Exposure

    • sun - mostly shade
  • Water Needs

    • even moisture - regular
  • Soil Needs

    • average
    • lean
  • Special Situation

    • verticillium wilt resistant

Features

  • Flower Season

    • summer
  • Foliage Color

    • green
  • Flower Color

    • blue
    • purple
  • Texture

    • grassy
  • Foliage Season

    • semi-evergreen
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