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CALAMAGROSTIS x acutiflora

Image of Calamagrostis x acutiflora

James H. Schutte

Family

Poaceae

Botanical Name

CALAMAGROSTIS x acutiflora

Plant Common Name

Feather Reed Grass

General Description

This classic ornamental grass offers a desirable upright habit and has sterile blooms so no need to worry about weediness. It is a cross between Calamagrostis arundinacea and C. epigejos.

Feather reed grass is a hardy perennial with bright green narrow blades forming a neat upright clump. In summer, upright panicles of silvery-purple flowers are held well above the plant, giving it an airy appearance. The flowers and foliage turn a golden wheat color in the fall and maintain their attractiveness through winter.

Like most grasses, feather reed grass requires full sun. It tolerates almost any soil, even moist soils. Plants should be sheared to the ground in late winter. This is an outstanding grass for massing. It looks super when planted with other sun-loving ornamentals—particularly showy flowering perennials like coneflower, black-eyed Susan and sedums. Its grassy flowers also hold up well in fresh and dried arrangements.

Characteristics

  • AHS Heat Zone

    9 - 5

  • USDA Hardiness Zone

    5 - 9

  • Sunset Zone

    2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Grass

  • Sun Exposure

    Full Sun, Partial Sun, Partial Shade

  • Height

    2'-3' / 0.6m - 0.9m

  • Width

    2'-4' / 0.6m - 1.2m

  • Bloom Time

    Summer, Late Summer

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Average

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Wet Site, Pollution, Salt, Soil Compaction

  • Growth Rate

    Fast

  • Water Requirements

    Drought Tolerant

  • Habit

    Upright/Erect

  • Seasonal Interest

    Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Purple, Bronze, Silver

  • Fruit Color

    Tan

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Foliage Color (Winter)

    Gold, Tan

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Fine

  • Foliage Sheen

    Glossy

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Dried Flower / Everlasting, Cutflower, Foundation, Mixed Border, Wildflower

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    No