North America Native Plant

Timberland Blue-eyed Grass

Botanical name: Sisyrinchium longipes

USDA symbol: SILO5

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Timberland Blue-Eyed Grass: A Hidden Gem for Southwestern Native Gardens If you’re looking to add a touch of delicate beauty to your native garden while supporting local ecosystems, timberland blue-eyed grass (Sisyrinchium longipes) might just be the perfect plant you’ve never heard of. This charming little perennial brings subtle elegance ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Timberland Blue-Eyed Grass: A Hidden Gem for Southwestern Native Gardens

If you’re looking to add a touch of delicate beauty to your native garden while supporting local ecosystems, timberland blue-eyed grass (Sisyrinchium longipes) might just be the perfect plant you’ve never heard of. This charming little perennial brings subtle elegance and ecological value to gardens across the American Southwest.

What Makes This Plant Special?

Don’t let the name fool you – timberland blue-eyed grass isn’t actually a grass at all! It’s a herbaceous perennial forb that produces stunning small blue to violet flowers with bright yellow centers. The grass-like foliage creates a fine-textured backdrop that makes those cheerful blooms really pop in the landscape.

As a native species to Arizona and New Mexico, this plant has spent thousands of years adapting to the unique conditions of the American Southwest. It’s perfectly suited to thrive in the challenging climate that many gardeners in this region know all too well.

A Plant Worth Protecting

Here’s something important to know: timberland blue-eyed grass has a vulnerable conservation status, meaning it’s considered at risk in the wild. With typically only 21 to 100 occurrences remaining and between 3,000 to 10,000 individual plants in existence, this species needs our help. If you choose to grow it, make sure you source your plants or seeds from reputable native plant nurseries that practice ethical collection methods.

Garden Design and Landscape Use

This petite beauty works wonderfully as:

  • An accent plant in native plant gardens
  • A naturalized element in meadow-style landscapes
  • A water-wise addition to xeriscape designs
  • Ground cover in areas where you want subtle texture and seasonal color

Its delicate appearance makes it perfect for softening hardscapes or creating gentle transitions between bolder landscape elements.

Growing Conditions and Care

The good news? Timberland blue-eyed grass is relatively low-maintenance once established. Here’s what it needs to thrive:

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soils are essential
  • Water: Moderate to low water needs once established
  • Hardiness: Suitable for USDA zones 5-9
  • Maintenance: Minimal care required after establishment

The Wetland Connection

Interestingly, this plant has a Facultative Wetland status in both the Arid West and Western Mountains regions. This means it usually occurs in wetlands but can also thrive in non-wetland conditions. For gardeners, this translates to a plant that’s adaptable to various moisture conditions – though it still prefers good drainage.

Supporting Pollinators

Those charming little flowers aren’t just pretty to look at – they’re also valuable to local pollinators. Small bees and other beneficial insects are drawn to the blooms, making this plant a wonderful addition to pollinator-friendly gardens.

Should You Plant It?

If you’re gardening in Arizona or New Mexico and want to support native biodiversity while adding understated beauty to your landscape, timberland blue-eyed grass could be an excellent choice. Just remember to source it responsibly from reputable native plant suppliers who can guarantee their plants weren’t collected from wild populations.

This little plant may be vulnerable in the wild, but with thoughtful cultivation by dedicated gardeners like you, we can help ensure its survival while enjoying its quiet charm in our own backyard sanctuaries.

Timberland 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 longipes (E.P. Bicknell) Kearney & Peebles - timberland 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