Red Osier Dogwood vs American Sweet Flag - TreeTime.ca

Red Osier Dogwood vs American Sweet Flag

Cornus sericea

Acorus americanus

COMING SOON

(new stock expected: fall of 2025)

CUSTOM GROW

Red Osier Dogwood
American Sweet Flag

Red Osier Dogwood is a small deciduous shrub that features deep red stems and twigs year-round, with creamy white flowers in the spring. This shrub will add a nice pop of color to your yard.

Red Osier Dogwood is an excellent soil stabilizer. It is fast growing and becomes drought tolerant once well established.

American Sweet Flag is a native perennial wetland plant found along shorelines, streams, wet meadows, and marshes. Its extensive rhizome system allows it to spread and stabilise soil, helping maintain the edges of ponds and streams. This dense growth provides cover for small animals and supports overall wetland biodiversity, while the rhizomes and seeds serve as food for small mammals and waterfowl. Cold-hardy and resilient, it is well-suited for ecological restoration, riparian plantings, erosion control, and naturalization projects.

The plant grows in dense clumps with tall, sword-shaped leaves that release a citrus-like scent when bruised. The rhizomes are aromatic, with a spicy, cinnamon-like fragrance that has been used in perfumery and flavouring. In early summer, American Sweet Flag produces a distinctive floral spike (spadix), adding visual interest to wetland plantings.

Red Osier Dogwood Quick Facts

American Sweet Flag Quick Facts

Zone: 2a
Zone: 3a
Height: 2.7 m (9 ft)
Height: 0.9 m (3 ft)
Spread: 1.8 m (6 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: wet
Growth rate: fast
Growth rate: fast
Life span: medium
Life span: short
Growth form: upright, colony-forming
Spreading: rhizomes - high
Suckering: medium


Foliage: fragrant
Fall colour: dark red
Bark: dark red, showy
Flowers: white
Flowers: yellow floral spike
Bloom time: spring to summer
Berries: white waxy
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no

In row spacing: 0.9 m (3 ft)

Between row spacing: 5 m (16 ft)
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, NT, PE
Other Names: american dogwood, california dogwood, creek dogwood, dogberry tree, red dogwood, red twig dogwood, redosier dogwood, redstem dogwood, western dogwood
Other Names: american sweetflag