Grey Alder vs Seaside Arrowgrass - TreeTime.ca

Grey Alder vs Seaside Arrowgrass

Alnus incana

Triglochin maritima

NOT AVAILABLE THIS SEASON - MIGHT RETURN

CUSTOM GROW

Grey Alder
Seaside Arrowgrass

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.

Note: We use Grey Alder for Alnus incana. This species is also known by many other common names, including River Alder, Speckled Alder, and others. Please confirm the scientific name to ensure you are ordering the correct plant.

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.

Grey Alder Quick Facts

Seaside Arrowgrass Quick Facts

Zone: 1a
Zone: 1b
Height: 8 m (25 ft)
Height: 0.5 m (1.5 ft)
Spread: 4 m (12 ft)
Spread: 0.3 m (1.0 ft)
Light: full sun
Light: full sun
Moisture: normal, wet
Moisture: wet
Growth rate: fast
Growth rate: medium
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: yes
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, NU, PE
Other Names: hoary alder, river alder, speckled alder
Other Names: common arrowgrass, common bog arrowgrass, shore arrowgrass