North America Native Plant

Strict Blue-eyed Grass

Botanical name: Sisyrinchium montanum var. montanum

USDA symbol: SIMOM

Life cycle: perennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Sisyrinchium heterocarpum E.P. Bicknell (SIHE11)  âš˜  Sisyrinchium strictum E.P. Bicknell (SIST4)   

Strict Blue-Eyed Grass: A Delicate Native Beauty for Your Garden If you’re looking for a charming native wildflower that won’t demand much attention but delivers plenty of character, strict blue-eyed grass (Sisyrinchium montanum var. montanum) might just be your new garden favorite. Despite its common name, this delightful plant isn’t ...

Rare plant alert!

Region: Conservation status by state

Status: S2Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Strict Blue-Eyed Grass: A Delicate Native Beauty for Your Garden

If you’re looking for a charming native wildflower that won’t demand much attention but delivers plenty of character, strict blue-eyed grass (Sisyrinchium montanum var. montanum) might just be your new garden favorite. Despite its common name, this delightful plant isn’t actually a grass at all – it’s a member of the iris family that just happens to sport grass-like foliage.

What Makes Strict Blue-Eyed Grass Special?

This perennial forb brings a subtle elegance to any landscape with its petite blue to purple flowers adorned with bright yellow centers. The blooms appear from late spring through early summer, creating cheerful little bursts of color that seem to wink at you from among the slender, grass-like leaves. Each flower may be small, but when planted in groups, strict blue-eyed grass creates a lovely carpet effect that’s both eye-catching and naturalistic.

Native Heritage and Distribution

Strict blue-eyed grass is a true North American native, calling both Canada and the lower 48 states home. You’ll find this adaptable species growing naturally across an impressive range, from Alberta and British Columbia down to Texas and New Mexico, and from the Pacific Northwest clear across to Pennsylvania and New York. It’s particularly well-suited to the Great Plains and western regions, where it has evolved to thrive in challenging conditions.

Important Conservation Note

Before you rush out to plant this beauty, there’s something important to know: strict blue-eyed grass has a Global Conservation Status of S2Q, which indicates some level of conservation concern. While this doesn’t mean you shouldn’t grow it, it does mean you should be thoughtful about your plant sources. Always purchase from reputable native plant nurseries that propagate their own stock rather than wild-collecting plants.

Perfect Spots in Your Garden

This versatile native shines in several garden settings:

  • Prairie and meadow gardens where it can naturalize beautifully
  • Rock gardens where its delicate form provides gentle contrast
  • Native plant borders as a charming ground cover
  • Naturalized areas where you want low-maintenance color
  • Rain gardens, thanks to its facultative wetland status

Growing Conditions and Care

One of the best things about strict blue-eyed grass is how easygoing it is once established. Here’s what it needs to thrive:

Light: Full sun to partial shade (though it flowers best with plenty of sunshine)
Soil: Well-draining soils; tolerates poor, rocky, or sandy conditions
Water: Drought tolerant once established, but appreciates occasional watering during dry spells
Climate: Hardy in USDA zones 3-8

The plant’s facultative wetland status means it’s adaptable to both wet and dry conditions – perfect for those tricky spots in your garden where moisture levels fluctuate.

Planting and Propagation Tips

Getting strict blue-eyed grass started in your garden is straightforward, though it does require a little patience:

  • Plant seeds in fall or early spring for best germination
  • Seeds need cold stratification, so winter planting works naturally
  • Space plants about 6-12 inches apart for good coverage
  • Once established, plants may self-seed in favorable conditions
  • Very low maintenance – just remove spent flower stalks if desired

Wildlife and Pollinator Benefits

Your garden visitors will thank you for planting strict blue-eyed grass. The small but abundant flowers attract native bees, beneficial flies, and other tiny pollinators that often get overlooked in garden planning. These smaller pollinators play crucial roles in ecosystem health and will appreciate having a native nectar source designed just for them.

Should You Plant Strict Blue-Eyed Grass?

If you’re creating a native garden, want to support local pollinators, or simply love plants that deliver beauty without demanding constant attention, strict blue-eyed grass deserves a spot on your list. Its conservation status makes it especially meaningful to grow – you’ll be helping preserve a piece of North American botanical heritage right in your own backyard.

Just remember to source your plants responsibly, be patient with establishment, and enjoy watching this charming native settle into your garden ecosystem. Sometimes the most rewarding plants are the ones that whisper rather than shout – and strict blue-eyed grass definitely falls into that delightful category.

Strict Blue-eyed Grass

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Iridaceae Juss. - Iris family

Genus

Sisyrinchium L. - blue-eyed grass

Species

Sisyrinchium montanum Greene - strict blue-eyed grass

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA