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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)
Hardiness: 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)
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.
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.
Regional...
This plant has been said to grow in the following regions:
, Tehachapi, California Jasper, Georgia Niles, Illinois Shawnee Mission, Kansas Ozark, Missouri Saint James, Missouri Helena, Montana Munsonville, New Hampshire Cliffside Park, New Jersey Albuquerque, New Mexico Columbus, Ohio Hulbert, Oklahoma Salem, Oregon Thompsons Station, Tennessee Fort Worth, Texas Arlington, Virginia Bainbridge Island, Washington Merrimac, Wisconsin