Emerald Green Arborvitae
Thuja occidentalis 'Smaragd' · Evergreen conifer, softwood
Plant Family
Cupressaceae
Tree Category
Conifer, evergreen, hedge/screen tree
Variety / Cultivar
'Smaragd' (also known as Emerald Green), characterized by its narrow pyramidal form and vibrant green foliage that retains its color well through winter.
Hardiness Zones
Thrives in USDA Hardiness Zones 3 through 8, demonstrating excellent cold hardiness and adaptability to various temperate climates.
About This Tree
A compact, narrow, pyramidal evergreen tree or large shrub with a dense, symmetrical growth habit and bright emerald-green foliage that does not bronze significantly in winter. It has a moderate growth rate and maintains its neat, formal columnar shape with minimal pruning.
Leaf Characteristics
Scale-like leaves arranged in flat, vertical sprays on branchinglets, bright emerald green in color year-round.
Bark Characteristics
Reddish-brown to grayish-brown bark that peels or shreds in narrow, vertical strips as the tree matures.
Growing Information
Origin Region
Native to eastern North America, though the specific cultivar was developed in Denmark.
Growing Season
Evergreen with active growth in spring and summer, going semi-dormant in winter. Best planted in early spring or fall.
Sunlight & Water Needs
Prefers full sun to partial shade. Requires regular watering, especially during the first growing season to establish a deep root system, and benefits from moist, well-draining soils.
Mature Size
Typically reaches 10 to 15 feet in height and 3 to 4 feet in spread with a moderate growth rate and a lifespan of several decades.
Special Characteristics
Excellent choice for privacy screens and hedges, good resistance to wind when established, and low maintenance. May suffer from browning due to drought, winter burn, or spider mites.
Wildlife & Ecology
Provides nesting sites and cover for small birds and mammals. Tolerated by deer to some extent, though heavy deer pressure in winter can result in browsing damage.