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Thuja 'Green Giant'

Image of Thuja 'Green Giant'

Gerald L. Klingaman

Family

Cupressaceae

Botanical Name

Thuja 'Green Giant'

Plant Common Name

Giant Arborvitae, Green Giant Arborvitae, Western Arborvitae, Western Red Cedar

General Description

Vigorous and adaptable, Green Giant arborvitae is a popular United States National Arboretum introduction. This tall, evergreen tree is a hybrid between Thuja standishii and Thuja plicata. It is a fast grower, has deep green foliage, a neat pyramidal habit and few pest or disease problems.

Adaptable to most moderately drained soil types, 'Green Giant' requires full sun and lots of space to grow. It is ideal to mass as a screen and makes a pleasing specimen tree in the landscape.

Characteristics

  • AHS Heat Zone

    7 - 5

  • USDA Hardiness Zone

    5 - 7

  • Sunset Zone

    A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 21, 22, 23, 24

  • Plant Type

    Tree

  • Sun Exposure

    Full Sun

  • Height

    50'-60' / 15.2m - 18.3m

  • Width

    12'-20' / 3.7m - 6.1m

  • Bloom Time

    Spring

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Pollution, Soil Compaction

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Pyramidal

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Insignificant

  • Flower Color

    Light Yellow

  • Fruit Color

    Brown, Sienna

  • Foliage Color (Spring)

    Green, Dark Green

  • Foliage Color (Summer)

    Dark Green

  • Foliage Color (Fall)

    Dark Green

  • Foliage Color (Winter)

    Dark Green

  • Bark Color

    Brown

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    Yes

  • Bark or Stem Fragrant

    No

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Medium

  • Foliage Sheen

    Glossy

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Bark Texture

    Exfoliating

  • Usage

    Feature Plant, Hedges, Screening / Wind Break

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Self-Sowing

    No