The "Emerald Green" Arborvitae (Thuja occidentalis 'Smaragd') is a popular cultivar of arborvitae known for its vibrant green foliage, dense growth habit, and columnar shape. Here are some key features of the Emerald Green Arborvitae:

1. Foliage: The foliage of Emerald Green Arborvitae is a rich, emerald green color, maintaining its vibrancy throughout the year. The leaves are scale-like and pressed tightly against the branches.

2. Growth Habit: This cultivar has a narrow, pyramidal or columnar growth habit. It naturally maintains a compact and upright shape without requiring extensive pruning.

3. Size: Emerald Green Arborvitae typically reaches a height of 8 to 12 feet at maturity, with a width of about 3 to 4 feet.

4. Versatility: Due to its narrow and compact form, Emerald Green Arborvitae is often used as a privacy screen, hedge, or as a specimen plant in landscaping. It can be planted in rows to create a dense and attractive living wall.

5. Sunlight Requirements: It prefers full sun to partial shade for optimal growth and foliage color.

6. Soil and Watering: The Emerald Green Arborvitae thrives in well-drained soil and benefits from regular watering, especially during dry periods. Proper watering is crucial for establishing the plant, but it becomes more drought-tolerant as it matures.

7. Disease Resistance: This cultivar is known for its resistance to common arborvitae diseases, such as arborvitae leaf miner.

8. Hardiness: Emerald Green Arborvitae is hardy in USDA zones 3 to 8, making it suitable for a wide range of climates.

When planting Emerald Green Arborvitae, consider its mature size and give it adequate spacing to allow for proper growth. Regular watering and occasional pruning to maintain its shape may be necessary. It is a popular choice for homeowners looking for an attractive and low-maintenance evergreen plant for privacy or landscaping purposes.