Seaside Arrowgrass vs Lewis Mock Orange - TreeTime.ca

Seaside Arrowgrass vs Lewis Mock Orange

Triglochin maritima

Philadelphus lewisii

CUSTOM GROW

Seaside Arrowgrass
Lewis Mock Orange

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.

Lewis Mock Orange is a flowering ornamental shrub that produces an abundance of white, fragrant blooms. The flowers have a sweet scent similar to orange blossoms, with a hint of pineapple. They bloom for several weeks from late spring to early summer, attracting pollinators and other beneficial insects.

Native to North America, Lewis Mock Orange is found from the southernmost portions of Alberta and British Columbia, and south into the northwestern United States. It makes an attractive shrub and can be used in hedgerows, pollinator gardens, and naturalization projects. Blooms occur on the previous year’s wood, so it is recommended to prune after it has finished flowering.

Seaside Arrowgrass Quick Facts

Lewis Mock Orange Quick Facts

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Zone: 1b
Zone: 4a
Height: 0.5 m (1.5 ft)
Height: 3 m (10 ft)
Spread: 0.3 m (1.0 ft)
Spread: 2.4 m (8 ft)
Light: full sun
Light: partial shade, full sun
Moisture: wet
Moisture: dry, normal
Growth rate: medium
Growth rate: medium
Life span: short
Life span: medium
Growth form: upright, clump-forming
Growth form: upright to arching, multi-stemmed
Spreading: rhizomes-low, seeds-low
Spreading: suckering - medium, seeds - low

Toxicity: can be toxic to humans and livestock

Flowers: very small, pinkish-white, hair like
Flowers: fragrant, white
Bloom time: spring to early summer
Bloom time: mid 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
Other Names: common arrowgrass, common bog arrowgrass, shore arrowgrass
Other Names: california mock orange, lewis mockorange, western mock orange, western syringa, wild mock orange