Thuja occidentalis 'Smaragd' Emerald Cedar Description Emerald green feathery foliage. Growth Habit: Upright, narrow, conical to pyramidal Mature Height: 13' to 16' (3.9 m to 4.8 m)Mature Spread: 4' to 6' (1.2 m to 1.8 m)Growth Rate: Moderate More Details Sun Exposure: Full Sun to Partial ShadeCold Hardiness Zone: 4Juglan tolerantTolerate moist soilLandscape Uses: Hedge, privacy screen or topiary