Seaside Arrowgrass vs Bluejoint - TreeTime.ca

Seaside Arrowgrass vs Bluejoint

Triglochin maritima

Calamagrostis canadensis

CUSTOM GROW

CUSTOM GROW

Seaside Arrowgrass
Bluejoint

Seaside Arrowgrass is a native perennial commonly found in wetlands, salt marshes, and moist meadows. It is especially suitable for difficult growing sites. Its dense root system helps stabilize soil, while also providing food, cover, and habitat for small animals within the wetland community.

Seaside Arrowgrass is suitable for shoreline stabilization, wetland restoration, and naturalization projects.

Bluejoint is a native perennial grass that forms tall, dense colonies. It is one of the most abundant grasses found in Canada and the United States. The extensive shallow root system and spreading rhizomes help stabilise soils, especially in wet meadows, marshes, and along streambanks.
It is a cool-season grass, growing most actively in spring and fall and slowing during the heat of summer. Seeds from its purple-tinged spikes feed birds and small mammals, and the plant itself provides forage for wildlife and livestock, though it does not tolerate heavy grazing. Its tall, dense growth also offers nesting habitat for wetland birds. With these combined values, Bluejoint is well-suited for naturalisation, riparian plantings, and habitat restoration projects.

Seaside Arrowgrass Quick Facts

Bluejoint Quick Facts

Zone: 1b
Zone: 2a
Height: 0.5 m (1.5 ft)
Height: 1.2 m (4 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.3 m (1.0 ft)
Light: full sun
Light: partial shade, full sun
Moisture: wet
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: short
Life span: medium
Growth form: upright, clump-forming
Growth form: upright, clump-forming
Spreading: rhizomes-low, seeds-low
Spreading: rhizomes - high, seeds - high

Toxicity: can be toxic to humans and livestock

Flowers: very small, pinkish-white, hair like
Bloom time: spring to early summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Other Names: common arrowgrass, common bog arrowgrass, shore arrowgrass
Other Names: bluejoint grass, bluejoint reedgrass, canada blue joint, canada reedgrass, marsh reedgrass