The Emerald Green Arborvitae (Thuja occidentalis 'Smaragd') is a popular, narrow evergreen known for privacy hedges, reaching about 12-14 feet tall and 4 feet wide, with a moderate growth rate. Thriving in full sun to partial shade across USDA Zones 2-8, it requires consistent moisture and well-drained soil to maintain its vibrant green color. Minimal pruning keeps this elegant hedge looking pristine year-round, making it an ideal choice for modern landscapes.