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    • Photo of Acorus gramineus foliage by Cliff

    Photo by Cliff

    This file is licensed under the Creative Commons Attribution 2.0 Generic license.

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    Acorus gramineus

    Also Known As

    • Grassy-leaved Sweet Flag
    • Japanese Sweet Flag

    Plant type

    perennial, groundcover, grass / grass like, aquatic

    size

    • H: 6"-12"
    • W: 12"-36"

    planting zones

    • 7a-10b

    More Options

    Acorus gramineus plant details

    Acorus gramineus is a broadleaf evergreen or semi-evergreen perennial groundcover aquatic grass (or grassy in appearance) with green foliage. In summer chocolate and tan flowers emerge. Features grassy texture. Grows well with sun - mostly shade and standing water - regular water. Adapts to various soil conditions. Does well in acidic, average, clay and rich soil. A good option if you're seeking something heat tolerant, humidity tolerant and verticillium wilt resistant.

    CHARACTERISTICS OF Acorus gramineus

    Plant type: perennial groundcover aquatic grass (or grassy in appearance)
    Plant family: acoraceae
    Foliage: evergreen or semi-evergreen green
    Mature size: 12 IN - 36 IN - wide, 6 IN - 12 IN - tall
    Flowers: chocolate and tan blooms in summer
    Uses: border plant, container plant, rock garden, woodland garden, year round interest

    GROWING CONDITIONS for Acorus gramineus

    USDA Zones: 7a - 10b
    Sun exposure: sun - mostly shade
    Watering frequency: standing water - regular
    Resistant to: deer and rabbit, heat, humidity and verticillium wilt
    Soil needs: acidic, average, clay and rich

    Nursery contributed plant descriptions

    Though not actually a grass or sedge, this diminutive grasslike perennial resembles the ornamental grasses enough to be included here. Grown primarily for its foliage, sweet flag grows best in moist, boggy soils in full sun along the coast or part shade elsewhere. If grown in shallow water, plants may produce occasional spathe-type blooms, though these are rare and generally insignificant. The following form upright clumps of narrow, iris-like leaves that grow 6-12? tall and spread slowly by rhizomes. Mass in containers or along walkways or streamsides for a delicate, showy effect. The roots and rhizomes have long been used as a source of perfume, and the foliage emits a fragrant aroma when bruised or crushed. Hardy to 0F. Japan.

    By: Native Sons

    This iris-looking perennial favors boggy or rich, well-irrigated soil, such as pond edges. The semievergreen narrow leaves of Japanese sweet flag are 1/2" wide, and about 6 - 12" long. Plants grow into large clumps from slowly spreading rhizomes. Inconspicuous flowers.

    By: Greer Gardens Inc.

    Gardening facts about Acorus gramineus plant

    How to Grow Acorus gramineus

    • Sun Exposure

      • sun - mostly shade

    • Water Needs

      • standing water - regular

    • Soil Needs

      • clay
      • acidic
      • adaptable
      • average
      • rich

    • Special Situation

      • heat tolerant
      • humidity tolerant
      • verticillium wilt resistant

    Features

    • Foliage Color

      • green

    • Flower Color

      • tan
      • chocolate

    • Wildlife

      • deer resistant
      • rabbit resistant

    • Flower Season

      • summer

    • Foliage Season

      • evergreen
      • semi-evergreen

    • Texture

      • grassy

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