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ARRHENATHERUM elatius 'Variegatum'

Image of Arrhenatherum elatius var. bulbosum 'Variegatum'

Mark Kane

Family

Poaceae

Botanical Name

ARRHENATHERUM elatius var. bulbosum 'Variegatum'

Plant Common Name

Tall Oatgrass, Variegated Tall Oatgrass

General Description

This variegated grass spreads quickly by small round corms. Its pretty blades are gray-green with white edges.

Bulbous oatgrass is a perennial grass that is native to Europe. It is considered an invasive weed in many parts of the western United States. It spreads and may escape beyond the confines of a garden, so manage it diligently if you plant it.

This prolific grass has green and white blades that are short, upright, linear and rough to the touch. The inconspicuous pale green flowers are produced in late spring and early summer and resemble oats.

Bulbous oatgrass prefers full sun and moist soil but will grow in drier locations. In the heat of summer it may go dormant but will reappear in fall. Its dry leaves and seed heads are very flammable.

For more information about this plant’s invasive status visit the USDA’s Weed of the West at http://plants.usda.gov/java/invasiveOne?pubID=WSWS .

Characteristics

  • AHS Heat Zone

    8 - 5

  • USDA Hardiness Zone

    5 - 8

  • Sunset Zone

    1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 15, 16, 17, 23, 24

  • Plant Type

    Grass

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    9"-12" / 22.9cm - 30.5cm

  • Width

    12"-36" / 30.5cm - 91.4cm

  • Bloom Time

    Summer, Late Summer, Early Fall, Fall

  • Native To

    Europe

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Average

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Wet Site

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Spring, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Silver

  • Fruit Color

    Green, Tan

  • Foliage Color (Spring)

    White, Gray Green

  • Foliage Color (Spring) Modifier

    Variegated

  • Foliage Color (Summer)

    Tan

  • Foliage Color (Fall)

    White, Gray Green

  • Foliage Color (Fall) Modifier

    Variegated

  • Foliage Color (Winter)

    Tan, Brown

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    Yes

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Bedding Plant, Dried Flower/Everlasting, Edging, Feature Plant, Groundcover, Rock Garden / Wall

  • Sharp or Has Thorns

    No

  • Invasive

    Sometimes

  • Self-Sowing

    No