Silver Leaf Willow vs American Sweet Flag - TreeTime.ca

Silver Leaf Willow vs American Sweet Flag

Acorus americanus

Salix alba sericea

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

American Sweet Flag
Silver Leaf Willow

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.

Native to North America, Silver Leaf Willow has orangish bark and long, silvery grey leaves. Bees and other insects are attracted to its flowers.

Popular as an ornamental tree for parks, it is also used as a shelterbelt species. It may not be as cold hardy as some of the other willow varieties, however.

American Sweet Flag Quick Facts

Silver Leaf Willow Quick Facts

Zone: 3a
Zone: 2a
Height: 0.9 m (3 ft)
Height: 15 m (50 ft)
Spread: 0.6 m (2.0 ft)
Spread: 15 m (50 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: wet
Moisture: normal, wet
Growth rate: fast
Growth rate: fast
Life span: short
Life span: long
Growth form: upright, colony-forming
Spreading: rhizomes - high
Suckering: high


Foliage: fragrant
Foliage: narrow-glossy
Fall colour: pale yellow
Bark: yellow-brown
Flowers: yellow floral spike
Bloom time: spring to summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: yes


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, NT, PE
Other Names: american sweetflag
Other Names: white willow