Seaside Arrowgrass vs Idaho Fescue - TreeTime.ca

Seaside Arrowgrass vs Idaho Fescue

Triglochin maritima

Festuca idahoensis

CUSTOM GROW

CUSTOM GROW

Seaside Arrowgrass
Idaho 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.

Idaho Fescue is a native perennial bunchgrass recognized for its fine-textured, blue-green foliage. Its dense, tufted growth and deep root system make it drought-tolerant and effective at stabilizing soils, particularly on slopes and open grasslands. Its upright, arching form and dense clumps give it strong ornamental value in both natural and designed landscapes.
This hardy grass provides cover for wildlife and forage for grazing animals, while also supporting soil health and habitat diversity. Idaho Fescue is well-suited for erosion control, ecological restoration, naturalization, xeriscaping, and habitat enhancement projects.

Seaside Arrowgrass Quick Facts

Idaho Fescue Quick Facts

Zone: 1b
Zone: 4a
Height: 0.5 m (1.5 ft)
Height: 0.3 m (1.0 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: 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
Other Names: common arrowgrass, common bog arrowgrass, shore arrowgrass
Other Names: blue bunchgrass, bluebunch fescue