North America Native Plant

Bluejoint

Botanical name: Calamagrostis canadensis var. canadensis

USDA symbol: CACAC10

Life cycle: perennial

Habit: grass

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states âš˜ Native to St. Pierre and Miquelon  

Synonyms: Calamagrostis anomala Suksd. (CAAN20)  âš˜  Calamagrostis atropurpurea Nash (CAAT14)  âš˜  Calamagrostis canadensis (Michx.) P. Beauv. var. imberbis (Stebbins) C.L. Hitchc. (CACAI)  âš˜  Calamagrostis canadensis (Michx.) P. Beauv. var. pallida (Vasey & Scribn.) Stebbins (CACAP4)  âš˜  Calamagrostis canadensis (Michx.) P. Beauv. var. robusta Vasey (CACAR)  âš˜  Calamagrostis canadensis (Michx.) P. Beauv. var. typica Stebbins (CACAT)  âš˜  Calamagrostis expansa (Munro ex Hillebr.) Hitchc. var. robusta (Vasey) Stebbins (CAEXR)  âš˜  Calamagrostis hyperborea Lange (CAHY12)  âš˜  Calamagrostis inexpansa A. Gray var. cuprea Kearney (CAINC)  âš˜  Calamagrostis inexpansa A. Gray var. robusta (Vasey) Stebbins (CAINR)  âš˜  Calamagrostis scribneri Beal (CASC2)   

Bluejoint Grass: A Native Powerhouse for Wet Gardens If you’ve been searching for a native grass that can handle those soggy spots in your yard while adding graceful movement to your landscape, let me introduce you to bluejoint grass (Calamagrostis canadensis var. canadensis). This unsung hero of the grass world ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4Q: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ 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 ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘ 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) ⚘ 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 ⚘

Region: Conservation status by state

Bluejoint Grass: A Native Powerhouse for Wet Gardens

If you’ve been searching for a native grass that can handle those soggy spots in your yard while adding graceful movement to your landscape, let me introduce you to bluejoint grass (Calamagrostis canadensis var. canadensis). This unsung hero of the grass world might just become your new favorite plant once you discover what it can do for your garden.

What Makes Bluejoint Special?

Bluejoint is a perennial grass that’s as tough as it is beautiful. With its blue-green foliage that sways elegantly in the breeze and produces delicate, feathery seed heads in summer, this grass brings both texture and movement to any landscape. But don’t let its delicate appearance fool you – this is one hardy plant that can handle conditions that would make other grasses throw in the towel.

Also known scientifically as Calamagrostis canadensis var. canadensis, this grass belongs to a group of plants called graminoids, which includes not just true grasses but also sedges and rushes. It’s a true North American native with an impressive pedigree.

Where Bluejoint Calls Home

One of the most remarkable things about bluejoint is its incredible native range. This adaptable grass is native throughout much of North America, including Alaska, Canada, and most of the lower 48 states. You can find it thriving from the Arctic tundra all the way down to the southern United States, growing in places as diverse as Alberta and Arizona, Maine and Montana.

The extensive distribution includes: Alberta, British Columbia, Alaska, Manitoba, New Brunswick, Arizona, California, Nova Scotia, Ontario, Colorado, Prince Edward Island, Connecticut, Quebec, Delaware, Saskatchewan, Yukon, Northwest Territories, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Labrador, and Newfoundland.

Why Your Garden Will Love Bluejoint

Here’s where bluejoint really shines – it’s the perfect solution for those challenging wet areas in your landscape. While many plants sulk in soggy soil, bluejoint absolutely thrives in moist to wet conditions. This makes it an excellent choice for:

  • Rain gardens and bioswales
  • Pond and stream margins
  • Low-lying areas that stay damp
  • Prairie and meadow restorations
  • Naturalized landscapes

The grass typically grows 2-4 feet tall with an equal spread, creating substantial clumps that provide excellent structure in the garden. Its rhizomatous growth habit means it can help stabilize soil in erosion-prone areas while creating a naturalized look.

Growing Bluejoint Successfully

The best news about bluejoint? It’s remarkably easy to grow once you understand its preferences. This grass is hardy in USDA zones 2-7, making it suitable for most northern and temperate regions.

Ideal Growing Conditions:

  • Soil: Moist to wet, can tolerate periodic flooding
  • Light: Full sun to partial shade
  • pH: Adaptable to various soil pH levels
  • Moisture: Consistent moisture is key – this isn’t a drought-tolerant grass

Planting and Care Tips

Getting bluejoint established in your garden is straightforward. Plant it in spring or fall when temperatures are moderate and moisture is typically more abundant. Space plants about 18-24 inches apart if you want them to fill in relatively quickly.

Once established, bluejoint is refreshingly low-maintenance. Here’s your care routine:

  • Water regularly during the first growing season to help establish roots
  • Cut back to 6 inches in late winter or early spring before new growth begins
  • Divide clumps every 3-4 years if needed to control spread
  • No fertilizing necessary – this grass thrives in natural conditions

Wildlife and Ecological Benefits

While bluejoint is wind-pollinated rather than insect-pollinated, it still provides valuable habitat for wildlife. The dense clumps offer nesting sites and cover for birds, while the seeds provide food for various songbirds and waterfowl. The sturdy structure also creates habitat for beneficial insects and small mammals.

In wetland ecosystems, bluejoint plays an important role in preventing erosion and improving water quality by filtering runoff. By planting it in your garden, you’re supporting these same ecological functions on a smaller scale.

Is Bluejoint Right for Your Garden?

Bluejoint is an excellent choice if you have consistently moist to wet areas in your landscape and want to embrace native plants. It’s particularly valuable for gardeners dealing with:

  • Poor drainage issues
  • Slopes prone to erosion near water features
  • The desire to create wildlife habitat
  • Interest in low-maintenance, sustainable landscaping

However, this grass isn’t the best choice for dry gardens or formal landscapes. Its spreading habit and preference for wet conditions make it better suited to naturalized settings rather than manicured beds.

The Bottom Line

Bluejoint grass proves that native doesn’t mean boring. This adaptable, beautiful grass offers an elegant solution for wet areas while supporting local ecosystems. With its wide native range, low maintenance requirements, and ecological benefits, bluejoint deserves serious consideration for any gardener looking to work with nature rather than against it.

So the next time you’re staring at that soggy spot in your yard wondering what on earth will grow there, remember bluejoint. Your wet garden problems might just become your greatest landscape asset.

Bluejoint

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Calamagrostis Adans. - reedgrass

Species

Calamagrostis canadensis (Michx.) P. Beauv. - bluejoint

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