Seaside Arrowgrass vs Rocky Mountain Fescue - TreeTime.ca

Seaside Arrowgrass vs Rocky Mountain Fescue

Triglochin maritima

Festuca saximontana

CUSTOM GROW

CUSTOM GROW

Seaside Arrowgrass
Rocky Mountain Fescue

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.

Rocky Mountain Fescue is a native perennial bunchgrass recognized for its fine-textured clumps and adaptability to harsh environments. It grows well in dry, rocky, and nutrient-poor soils and is highly cold-tolerant, making it well-suited to both prairie and alpine habitats. Its fibrous root system contributes to soil stability and helps reduce erosion on slopes and shallow soils.
Widespread across western and northern North America, Rocky Mountain Fescue is an important component of many prairie and alpine ecosystems. It contributes ground cover and organic matter that support soil function, provides cover for small wildlife, and offers moderate forage for grazing animals. Hardy and versatile, it is used in ecological restoration, naturalization, and habitat enhancement projects, particularly in upland and alpine landscapes.

Seaside Arrowgrass Quick Facts

Rocky Mountain Fescue Quick Facts

Zone: 1b
Zone: 2a
Height: 0.5 m (1.5 ft)
Height: 0.3 m (1.0 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.2 m (0.8 ft)
Light: full sun
Light: full sun
Moisture: wet
Moisture: dry, normal
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: upright, clump-forming
Growth form: clump-forming
Spreading: rhizomes-low, seeds-low
Spreading: seeds - low

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, NL, YT, NT, NU
Other Names: common arrowgrass, common bog arrowgrass, shore arrowgrass
Other Names: mountain fescue