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CALAMAGROSTIS x acutiflora 'Avalanche'

Image of Calamagrostis x acutiflora 'Avalanche'

Jessie Keith

Family

Poaceae

Botanical Name

CALAMAGROSTIS x acutiflora 'Avalanche'

Plant Common Name

Avalanche Feather Reed Grass, Feather Reed Grass

General Description

This variegated ornamental grass offers a desirable upright habit and has sterile blooms so need to worry about weediness. It is a cross between Calamagrostis arundinacea and C. epigejos.

Feather reed grass is a hardy clump-forming perennial with bright green narrow blades with a narrow white stripe down the center of each. 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, this requires full sun and tolerates any soil so long as it is well-drained. 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, Drought, Salt, Soil Compaction

  • Growth Rate

    Fast

  • Water Requirements

    Drought Tolerant, Average Water

  • Habit

    Upright/Erect

  • Seasonal Interest

    Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Green, Purple

  • Fruit Color

    Tan

  • Foliage Color (Spring)

    White, Green

  • Foliage Color (Spring) Modifier

    Striped/Striated

  • Foliage Color (Summer)

    White, Green

  • Foliage Color (Summer) Modifier

    Striped/Striated

  • Foliage Color (Fall)

    White, Green

  • Foliage Color (Fall) Modifier

    Striped/Striated

  • 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