Thuja occidentalis 'Smaragd'
 
The Arborvitae Emerald Green is an attractive, hardy evergreen with a narrow, pyramidal shape and dense, emerald green foliage that retains its color even in the winter. This shrub is heat and humidity tolerant, and can withstand dry spells when established. It is an excellent choice for screening or tall hedge use, as well as an ideal specimen for topiary.