Canadian Buffaloberry vs American Sweet Flag - TreeTime.ca

Canadian Buffaloberry vs American Sweet Flag

Shepherdia canadensis

Acorus americanus

COMING SOON

(new stock expected: fall of 2025)

CUSTOM GROW

Canadian Buffaloberry
American Sweet Flag

Canadian Buffalo Berry is a native deciduous shrub found throughout North America. This hardy, medium-sized shrub will tolerate poor soil conditions and produces attractive, edible–though very bitter–red fruit.

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.

Canadian Buffaloberry Quick Facts

American Sweet Flag Quick Facts

Zone: 1a
Zone: 3a
Height: 3 m (10 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: dry, normal
Moisture: wet
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: upright, colony-forming
Spreading: rhizomes - high
Suckering: none


Foliage: dark green with silver undersides
Foliage: fragrant
Flowers: tiny, red
Flowers: yellow floral spike
Bloom time: spring to summer
Berries: red bitter berries (edible)
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, NT, PE
Other Names: canada buffalo berry, canada buffaloberry, canadian buffaloberry, foam berry, foamberry, russet buffaloberry, soap berry, soapberry, soopolallie
Other Names: american sweetflag