Grey Alder vs Seaside Arrowgrass - TreeTime.ca

Grey Alder vs Seaside Arrowgrass

Triglochin maritima

Alnus incana

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Seaside Arrowgrass
Grey Alder

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.

River Alder is a large shrub or small tree with a multi-stemmed, spreading habit. It is an excellent tree to plant if you want to stabilize the soil near rivers and creeks.

Unlike the other alder varieties, River Alder is attractive enough to be included in riverside plantings by municipal and provincial park organizations.

Seaside Arrowgrass Quick Facts

Grey Alder Quick Facts

Zone: 1b
Zone: 1a
Height: 0.5 m (1.5 ft)
Height: 8 m (25 ft)
Spread: 0.3 m (1.0 ft)
Spread: 4 m (12 ft)
Light: full sun
Light: full sun
Moisture: wet
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: upright, clump-forming
Spreading: rhizomes-low, seeds-low
Suckering: none

Toxicity: can be toxic to humans and livestock

Fall colour: yellow to orange
Flowers: very small, pinkish-white, hair like
Bloom time: spring to early summer
Fruit: small catkins
Cones: small brown cones
Hybrid: no
Hybrid: no
Catkins: no
Catkins: yes


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: hoary alder, river alder, speckled alder