Sweet Flag, American Sweetflag, Several-Veined Sweetflag

Sweet Flag, American Sweetflag, Several-Veined Sweetflag

Acorus americanus

This upright perennial bears fragrant flowers in summer.

  • Flowers are produced reliably through the bloom season.
  • Upright clump, reaching 90 cm at maturity; divide every three to four years to maintain vigour.
  • Best in full sun to partial shade with moist, wet soil.
Size
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Plant Characteristics

Sunlight
Full sun, Partial shade
Soil Moisture
Moist, Wet
Hardiness Zone
3 – 3
Mature Height (meters)
0.6 – 0.9
Mature Spread (meters)
0.7 – 0.9
Growth Rate
Medium
Foliage Colour
Green
Bloom Time
Summer
Habit
Upright
Deer Resistant
Rabbit Resistant
Ontario Native
Fragrant
Landscape Uses
Mass planting
Growing & Maintenance Tips
Grow in a moist to wet soil, in full sun or partial shade. Spreads quickly by rhizomes and works well for retaining soil at the edge of streams and ponds. Can tolerate periods of drought, but suffers in appearance.
Notes
Native to Ontario. Widely confused with the European strainAcorus calamus, it can be easily identified by the distinct ribs on the leaves.Acorus calamushas one midrib andAcorus americanushave several. Both species have naturalized throughout North America. Acorus americanuswas used by Native Americans as a replacement for ginger, cinnamon, and nutmeg. The rhizomes were also used in perfumes.

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