Sweet Flag, also known as Acorus calamus, is a perennial plant that is known for its sweetly fragrant foliage and its tolerance for wet conditions.
This plant typically grows to a height of 2-3 feet with a similar spread. It prefers full sun to part shade and thrives best in wet, boggy soils, making it a great choice for water gardens, pond edges, or other areas of the landscape that stay consistently moist.
The leaves of Sweet Flag are sword-shaped, bright green, and have a sweet, spicy fragrance when crushed. In the summer, it produces inconspicuous, greenish-yellow flowers on a spadix, similar to many other water-loving plants.
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 Type:  | 
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 Origins:  | 
 Northeast and Upper Midwest N. America  | 
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 Height:  | 
 2' - 3'  | 
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 Spread:  | 
 0.5' - 1'  | 
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 Spacing:  | 
 0.5'  | 
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 USDA Hardiness Zone:  | 
 3 - 6  | 
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 Culture:  | 
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 Bloom Color:  | 
 Green  | 
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 Season of Interest:  | 
MAINTENANCE NEEDS: Low maintenance. Keep soil moist.
LANDSCAPE USES: Accents or Group Plantings, Borders, Naturalized Areas, Wildlife Gardens Native Gardens, Pond Edges, Water Gardens, and Containers
COMPANION PLANTS: Swamp Milkweed, Cherokee Sedge, Northern Blue Flag Iris
IMAGES: Jack Greenlee, U.S. Forest Service, Acorus americanus USFS-1, (2) Photo by Tom Potterfield, Acorus americanus (sweetflag), (3) Ryan Hodnett, Sweetflag (Acorus americanus) - Kitchener, Ontario 2018-08-17, CC BY-SA 4.0
*As plants have ranges in appearance they may not appear as the images shown