Thuja smaragd is a cultivar of Thuja occidentalis prized for its vibrant, emerald-green foliage and pyramidal form. This evergreen conifer boasts a dense, compact growth habit, reaching a mature height of 3-4m and a width of 1.2m. Its needle-like leaves retain their color year-round, making it an excellent choice for adding year-round interest to gardens and landscapes. It is frost-hardy and prefers moist, well-drained soil, thriving in full sun to partial shade conditions. Popular uses include hedging, screening, and accent planting in formal or informal landscapes, where its uniform growth and low maintenance requirements are highly valued.