Seaside Arrowgrass vs Knotted Rush - TreeTime.ca

Seaside Arrowgrass vs Knotted Rush

Triglochin maritima

Juncus nodosus

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Seaside Arrowgrass
Knotted Rush

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.

Knotted Rush is a native perennial wetland plant found growing in marshes, swamps, wet meadows, and along shorelines. It spreads by underground rhizomes to form colonies, which can also help stabilize soils and shorelines.

Its upright, slender stems and small clusters of greenish-brown seed heads add structure to wetland plant communities. Knotted Rush is well-suited to wetland conservation, rain gardens, naturalization, and restoration projects. As a cool-season grower, it grows actively during spring and fall, when temperatures are cooler.

Seaside Arrowgrass Quick Facts

Knotted Rush Quick Facts

Zone: 1b
Zone: 1b
Height: 0.5 m (1.5 ft)
Height: 0.5 m (1.5 ft)
Spread: 0.3 m (1.0 ft)
Spread: 0.2 m (0.5 ft)
Light: full sun
Light: 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: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Other Names: common arrowgrass, common bog arrowgrass, shore arrowgrass