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Acorus

Acorus, commonly known as Sweet Flag, is a genus of monocot flowering plants that has been historically classified within the Araceae family but now has its own family, Acoraceae, and order, Acorales. This genus is notable for being one of the oldest surviving lineages of monocots.

Acorus species are often found in wetland environments and are known for their grass-like or iris-like appearance. They thrive in moist to boggy soils, with some varieties preferring drier conditions. The plants grow best in part shade, although some can tolerate full sun.

The cultivation of Acorus involves light and moisture needs of the variety being grown, as well as the soil pH, which ideally ranges from 5.5 to 6.5. These plants can add a unique texture and fragrance to garden spaces, particularly in water gardens or boggy areas where other plants might struggle to survive.

Acorus

Acorus g. 'Ogon' (10)ct Quarts

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Acorus

Acorus g. 'Ogon' (18)ct Flat

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Acorus

Acorus g. 'Ogon' (3.5 inch pot)

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Acorus

Acorus g. 'Ogon' (4) 1-gallons

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Acorus

Acorus g. 'Ogon' (10)ct Quarts

Acorus gramineus 'Ogon' Common name: Golden sweet flag, golden Japanese sweet flag, or Japanese rush (a.k.a. 'Wogon'). Zone: (5) 6 to 10, evergreen in warm zones. Sun to part shade, aquatic or wetland perennial.Mature size: 6 to 12 inches tall, with...

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Acorus

Acorus g. 'Ogon' (18)ct Flat

Acorus gramineus 'Ogon' (18)ct Flat Common name: Golden sweet flag, golden Japanese sweet flag, or Japanese rush (a.k.a. 'Wogon'). Zone: (5) 6 to 10, evergreen in warm zones. Sun to part shade, aquatic or wetland perennial.Mature size: 6 to 12...

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Acorus

Acorus g. 'Ogon' (3.5 inch pot)

Acorus gramineus 'Ogon' (3.5-inch pot)Common name: Golden Variegated Sweet Flag Height: 8-12 Inches Spread: 6-12 Inches Hardiness Zone: 5/6-10 Sun to Part-Shade Prefers afternoon shade in Southern zones Bright golden and green striped grass-like...

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Acorus

Acorus g. 'Ogon' (4) 1-gallons

Acorus gramineus 'Ogon' (4) 1-gallons Common name: Golden sweet flag, golden Japanese sweet flag, or Japanese rush (a.k.a. 'Wogon'). Zone: (5) 6 to 10, evergreen in warm zones. Sun to part shade, aquatic or wetland perennial.Mature size: 6 to 12...

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Now: $114.72
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Acorus gramineus is a popular ornamental plant often mistaken for a grass due to its similar appearance. It thrives in moist, boggy conditions and prefers damp soil, tolerating up to 4 inches of standing water. While it can grow in full sun, afternoon shade or dappled sunlight is ideal in hot climates to prevent heat stress.

Acorus (ak-or-us) is commonly called grassy-leaved sweet flag. Foliage and rhizomes are sweetly fragrant when bruised, hence the common name. When crushed, it releases a fragrance reminiscent of tangerine. The sweet scent of calamus oil is used in perfumes and potpourri. It has even been used in the production of gin and beer as a flavor smoother and enhancer.

It is a semi-evergreen, marginal aquatic perennial that features a grass-like tuft of narrow leaf blades that fan outward. It thrives in wet soils and is commonly grown in water gardens, pond margins and boggy areas for foliage accent or ground cover.

Acorus prefers to grow in fertile, constantly moist, acidic soil. However, it will tolerate a wide range of conditions as long as moisture is constantly available, including standing water up to 5 inches deep. In hot summer climates, without afternoon shade or filtered sun, leaf tips may scorch if allowed to dry out. A regular watering schedule during the first growing season will help establish root system. Propagate by division only, divide every 2 to 3 years in early spring.

Slowly naturalizes by creeping rhizomes and can form large colonies in the wild. This grass is not aggressively invasive, nor a true grass.

Native to bogs, it is great for bogs, containers, edging or as a groundcover, and ideal in water gardens, along streams or ponds, or anywhere soil moisture requirements can be met. Maintenance free and deer resistant.

Key Features:

Sweet fragrance: Foliage and rhizomes release a pleasant, tangerine-like scent when crushed.
Versatile use: Ideal for water gardens, pond margins, bogs, and containers.
Low maintenance: Requires minimal care once established.
Deer resistant: Not attractive to deer.

Grass-like appearance: Resembles grasses but is not a true grass.
Moist-loving: Thrives in wet, boggy conditions.
Sun tolerance: Prefers full sun but benefits from afternoon shade in hot climates.
Spreading habit: Spreads through rhizomes.

Growing Conditions:

Soil: Prefers fertile, moist, acidic soil but can tolerate a wide range of well-drained soil.
Moisture: Requires constant moisture, including standing water.
Sunlight: Thrives in full sun but benefits from afternoon shade in hot climates.

Spacing: Plant 8-12 inches apart.

Propagation and Care:

Propagation: Propagate by division every 2-3 years in early spring.
Watering: Keep soil consistently moist, especially during dry periods.
Spreading: Can slowly spread through rhizomes and form colonies.

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Acorus

Acorus gramineus FAQ