Seaside Arrowgrass vs Woolgrass - TreeTime.ca

Seaside Arrowgrass vs Woolgrass

Triglochin maritima

Scirpus cyperinus

CUSTOM GROW

CUSTOM GROW

Seaside Arrowgrass
Woolgrass

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.

Woolgrass is a native perennial sedge that forms dense clumps in wetlands, ditches, and along shorelines. Its ability to thrive in saturated soils and shallow water, combined with its spreading growth habit, makes it especially valuable for waterside & riparian plantings, erosion control, ecological restoration, and naturalization projects.
The distinctive spikelets are covered in brown woolly bristles, which is where it gets the name Woolgrass. It produces seeds that are eaten by waterfowl and small mammals, while its dense stems offer cover and nesting habitat. It grows most actively in spring and fall, slowing or going dormant in the summer heat.

Seaside Arrowgrass Quick Facts

Woolgrass Quick Facts

Zone: 1b
Zone: 3a
Height: 0.5 m (1.5 ft)
Height: 1.5 m (5 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.9 m (3 ft)
Light: full sun
Light: partial shade, full sun
Moisture: wet
Moisture: wet
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: upright, clump-forming
Growth form: upright, colony-forming
Spreading: rhizomes-low, seeds-low
Spreading: rhizomes - medium

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: MB, ON, QC, NS, NB, NL, PE
Other Names: common arrowgrass, common bog arrowgrass, shore arrowgrass
Other Names: brown woolly sedge, common woolgrass, common woolly bulrush, cottongrass bulrush, marsh bulrush, wool grass