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PlantFiles: Mountain Blue-eyed Grass
Sisyrinchium montanum

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Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Sisyrinchium (sis-ee-RINK-ee-um) (Info)
Species: montanum (MON-tah-num) (Info)

5 members have or want this plant for trade.

Category:
Bulbs
Perennials

Height:
6-12 in. (15-30 cm)

Spacing:
9-12 in. (22-30 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Medium Blue

Bloom Time:
Late Spring/Early Summer

Foliage:
Herbaceous
Smooth-Textured

Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

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Profile:

2 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive hillfarm On Nov 27, 2010, hillfarm from Quesnel, BC (Zone 4a) wrote:

Lovely native wildflower of dry hillsides & grasslands in central interior British Columbia. Blooms open in sun & close tightly on cloudy days. Haven't seen it used in gardens around here; plants are slender & quite inconspicuous so I'm thinking it would be lost unless grown in a rockery in a group or colony. I much appreciate it in the wild in early to mid-summer...always seems to be blooming at the same time as the wild roses.

Positive Todd_Boland On Feb 19, 2005, Todd_Boland from St. John's, NL (Zone 5b) wrote:

This is one of the largest-flowering of the 'blue-eyed grass' species; also one of the tallest. I've tried several species and this one so far has not been too invasive (others are quite nasty). Nice in a rockery or planted next to a yellow flowered or yellow foliaged plant.

Regional...

This plant has been said to grow in the following regions:

Denver, Colorado
Careywood, Idaho
Watervliet, Michigan



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