Photo by Melody

PlantFiles: White Cedar, Eastern Arborvitae, American Arborvitae
Thuja occidentalis 'Emerald Green'

Family: Cupressaceae (koo-press-AY-see-ee) (Info)
Genus: Thuja (THOO-yuh) (Info)
Species: occidentalis (ok-sih-den-TAY-liss) (Info)
Cultivar: Emerald Green
Additional cultivar information: (aka Smaragd)

4 vendors have this plant for sale.

7 members have or want this plant for trade.


10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)

4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

USDA Zone 2a: to -45.5 C (-50 F)
USDA Zone 2b: to -42.7 C (-45 F)
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:

Bloom Time:
Late Winter/Early Spring

Grown for foliage

Other details:
Average Water Needs; Water regularly; do not overwater
Provides winter interest

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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to view:

Thumbnail #1 of Thuja occidentalis by BUFFY690

By catpads
Thumbnail #2 of Thuja occidentalis by catpads

By GardenGuyKin
Thumbnail #3 of Thuja occidentalis by GardenGuyKin

By GardenGuyKin
Thumbnail #4 of Thuja occidentalis by GardenGuyKin

By cheesehead118
Thumbnail #5 of Thuja occidentalis by cheesehead118

By audsrz
Thumbnail #6 of Thuja occidentalis by audsrz

By DaylilySLP
Thumbnail #7 of Thuja occidentalis by DaylilySLP

There are a total of 11 photos.
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4 positives
1 neutral
1 negative

Gardeners' Notes:

Negative Sequoiadendron4 On May 15, 2014, Sequoiadendron4 from Lititz, PA (Zone 6b) wrote:

While this plant is useful as a screen, it provides very little other benefits to the garden. It is way too over planted and will split under heavy snow or ice loads if above 10-12' tall. My rear neighbor lined his property with these when they moved in about 35 years ago. They're still around but they look pretty haggardly. If properly trimmed and maintained every few years, a hedge of this plant can look nice without becoming an eyesore.

Positive virginiarose On Mar 21, 2011, virginiarose from Southeast, VA (Zone 8a) wrote:

Thuja Green Giant is the one that gets 40 feet tall, not the Emerald green, this gets 8-12 feet tall. Also I have heard this is the only Arborvitae that doesn't mind pruning. I have two in my corner garden and I do not plan on letting them get 12 feet, I will keep them around 6-8 feet tall. Very beautiful evergreen, easy to care for.

Positive velveteena On Dec 27, 2010, velveteena from Seattle, WA wrote:

I give this plant a positive because it has survived the last three years in quite shady conditions, along with neglect in the area of watering. I now try harder in the summer. It's all good, though. I planted three as a screen near the road, but there is inadequate room if they get too huge. Then I'll report on attempts with pruning!

Neutral WUVIE On Jul 17, 2009, WUVIE from Hulbert, OK (Zone 7a) wrote:

Leaving a neutral only because I just purchased this plant, but forsee a positive in the future.

As mentioned above, the height listed for this particular plant is
listed at 40', when it should be 15' tall.

Found an entire aisle of these for five dollars each today, regular
price $24.98.

Positive cheesehead118 On Oct 9, 2008, cheesehead118 from Thompsons Station, TN (Zone 6b) wrote:

Useful as a hedge, on corners, in the background, etc. In my experience, emeralds only get around 4' wide and 12' -15' tall. They grow moderately fast. Stays a nice green all winter here in TN. Problems sometimes occur when placed near a downspout in clay. They don't like to sit in water. Also, in the drought of 2007 here, lots of these died or nearly died. Some that survived have their south facing sides scorched and still remain brown. If it is dry in the summer, make sure to water these. They won't repair the browned/ dead areas. Also watch out for bag-worms. Because of the narrow growth, Emeralds are a very useful plant.

Positive DATURA12 On Feb 21, 2008, DATURA12 from Fort Worth, TX (Zone 8a) wrote:

According to the information that is posted for this plant it grows 40', the tag from the grower states 10-15' tall.


This plant has been said to grow in the following regions:

Bear Valley Springs, California
Longmont, Colorado
Jasper, Georgia
Homer Glen, Illinois
Niles, Illinois
Shawnee Mission, Kansas
Dracut, Massachusetts
Livonia, Michigan
Traverse City, Michigan
Ozark, Missouri
Saint James, Missouri
Helena, Montana
Munsonville, New Hampshire
Cliffside Park, New Jersey
Piscataway, New Jersey
Albuquerque, New Mexico
Columbus, Ohio
Hulbert, Oklahoma
Portland, Oregon
Salem, Oregon
Lititz, Pennsylvania
Wilkes Barre, Pennsylvania
Moore, South Carolina
Thompsons Station, Tennessee
Fort Worth, Texas
Arlington, Virginia
Portsmouth, Virginia
Roanoke, Virginia
Bainbridge Island, Washington
Rosburg, Washington
Seattle, Washington
Merrimac, Wisconsin

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