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Sweet Flag

Acorus Calamus

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Overview

Sweet Flag (Acorus calamus) is a perennial marsh plant featuring sword-shaped leaves and a fragrant, spicy aroma. It typically grows 2-4 feet tall and thrives in wet soils, often along edges of ponds and streams. Ideal for water gardens, Sweet Flag's green-yellow flowers bloom in early summer. Zones 4-10 suit it best, and it prefers full to partial sun. Notable for its ease of care and rhizomatous growth.

Sun Half, ShadeWater HighZones 4–10

Culture

Sun
Half, Shade
Water
High
USDA zones
4–10

Shape & size

Mature height
2–3 Ft.
Mature width
1–2 Ft.

Classification

Family
Araceae

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Photos (60)

Sweet Flag (Acorus Calamus) — It typically grows 2-4 feet tall and thrives in wet soils, often along edges of ponds and streams
Sweet Flag (Acorus Calamus) — Sweet Flag (Acorus calamus) is a perennial marsh plant featuring sword-shaped leaves and a fragrant
Sweet Flag (Acorus Calamus) — Ideal for water gardens, Sweet Flag's green-yellow flowers bloom in early summer
Sweet Flag (Acorus Calamus) — scientifically known as Acorus calamus
Sweet Flag (Acorus Calamus) — Notable for its ease of care and rhizomatous growth
Sweet Flag (Acorus Calamus) — Zones 4-10 suit it best, and it prefers full to partial sun
Sweet Flag (Acorus Calamus) — is a perennial marsh plant that brings an element of stately grace to any water garden or damp setting
Sweet Flag (Acorus Calamus) — Hailing from the Acoraceae family
Sweet Flag (Acorus Calamus) — its sword-shaped foliage resembles that of the iris
Sweet Flag (Acorus Calamus) — creeping rhizomes.<br><br>The foliage of Sweet Flag
Sweet Flag (Acorus Calamus) — provides a vertical accent with its glossy
Sweet Flag (Acorus Calamus) — reaching heights of 2 to 4 feet and widths of 2 to 3 feet
Sweet Flag (Acorus Calamus) — inconspicuous spadixes - pencil-like flower spikes enveloped by a pale green sheath
Sweet Flag (Acorus Calamus) — Though not known for its flowers
Sweet Flag (Acorus Calamus) — In spring to early summer
Sweet Flag (Acorus Calamus) — it blooms with understated
Sweet Flag (Acorus Calamus) — spicy scent when crushed or bruised
Sweet Flag (Acorus Calamus) — its fragrance more than compensates
Sweet Flag (Acorus Calamus) — lending a sensory aspect to garden settings.<br><br>Sweet Flag thrives in USDA hardiness zones 4 through 9
Sweet Flag (Acorus Calamus) — preferring full sun to part shade
Sweet Flag (Acorus Calamus) — It excels in wet soil or shallow water
Sweet Flag (Acorus Calamus) — Acorus calamus is also valued for its reputed medicinal properties and historical use as an herbal remedy
Sweet Flag (Acorus Calamus) — but division every 2 to 3 years can promote vigorous growth
Sweet Flag (Acorus Calamus) — making it ideal for planting along pond edges

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