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Green Giant Arborvitae Thuja 'Green Giant'

Previously known as:

  • Thuja standishii x plicata 'Green Giant'
Phonetic Spelling
THOO-yuh
Description

Thuja 'Green Giant' is a large, needled, evergreen, conifer tree that is a hybrid cultivar of T. plicata and T. standishii (a cross between the Western Redcedar and Japanese arborvitae, respectively). This hybrid was developed in the 1930's in Denmark and was introduced to the U.S. in 1967 when the U.S. National Arboretum received a specimen. Later availability to nurseries increased interest for use in landscapes. Its low-branching, dense columnar-pyramidal habit reaches a mature height of 40-60 feet and width 12-20 feet with a lifespan of 40-60 years. Dark green sprays of small, glossy, scale-like needles retain their deep green color through the winter.

This tree does best in a moist, full-sun location with light afternoon shade. It tolerates a wide range of soils and, in optimal conditions, can grow 3-4 feet per year. It resists most diseases, insects, periodic drought, and deer. It does not tolerate salt (spray or salty soils). It is a low-maintenance landscaping choice due to its hardiness and uniform growth habit that requires little to no pruning to maintain an attractive pyramidal shape. Younger plants may be trimmed into hedges or privacy screens. Groupings, planted more closely together, are also used as windbreaks or to reduce noise. Hardiness in zones 5-8 make this a popular evergreen choice for landscapes in the southeast U.S. and is also a good alternative to Leyland Cypress.

Insects, Diseases, and Other Plant Problems:  No serious problems.  Bagworms are occasional pests and root rot can occur in poorly drained soils. Toxic to grazing animals as horses, cattle and sheep.

 

VIDEO Created by Homegrown featuring Jeff Owen, Area Extension Forestry Specialist for NC State Extension

More information on Thuja.

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See this plant in the following landscape:
Cultivars / Varieties:
  • 'Cupressus Cryptomeria'
  • 'Diirsource'
'Cupressus Cryptomeria', 'Diirsource'
Tags:
#evergreen#drought tolerant#low maintenance#windbreak#hedges#disease resistant#fast growing#privacy#evergreen tree#Christmas tree#christmas#noise reduction
 
Cultivars / Varieties:
  • 'Cupressus Cryptomeria'
  • 'Diirsource'
'Cupressus Cryptomeria', 'Diirsource'
Tags:
#evergreen#drought tolerant#low maintenance#windbreak#hedges#disease resistant#fast growing#privacy#evergreen tree#Christmas tree#christmas#noise reduction
  • Attributes:
    Genus:
    Thuja
    Family:
    Cupressaceae
    Life Cycle:
    Woody
    Recommended Propagation Strategy:
    Stem Cutting
    Dimensions:
    Height: 40 ft. 0 in. - 60 ft. 0 in.
    Width: 12 ft. 0 in. - 20 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Tree
    Woody Plant Leaf Characteristics:
    Needled Evergreen
    Habit/Form:
    Columnar
    Dense
    Growth Rate:
    Rapid
    Maintenance:
    Low
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    High Organic Matter
    Loam (Silt)
    Sand
    Shallow Rocky
    Soil pH:
    Acid (<6.0)
    Alkaline (>8.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Dry
    Available Space To Plant:
    6-feet-12 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    5b, 5a, 6b, 6a, 7b, 7a, 8b, 8a
  • Fruit:
    Fruit Color:
    Brown/Copper
    Green
    Fruit Length:
    < 1 inch
    Fruit Description:
    No fruits. Small upright seed cones are up to 1/2 inch long. emerge as green then mature to brown.
  • Flowers:
    Flower Description:
    Non-flowering
  • Leaves:
    Woody Plant Leaf Characteristics:
    Needled Evergreen
    Leaf Color:
    Green
    Leaf Feel:
    Glossy
    Leaf Type:
    Needles
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Oblong
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    < 1 inch
    Leaf Width:
    < 1 inch
    Leaf Description:
    Small glossy scale-like leaves are tightly oppositely arranged in rows of four and overlapping, forming flat fan-like sprays.
  • Bark:
    Bark Color:
    Dark Brown
    Surface/Attachment:
    Shaggy
    Bark Description:
    Shaggy brown bark
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Lawn
    Naturalized Area
    Design Feature:
    Hedge
    Screen/Privacy
    Security
    Small groups
    Specimen
    Attracts:
    Songbirds
    Resistance To Challenges:
    Deer
    Drought
    Insect Pests
    Wind
    Problems:
    Problem for Horses