Thuja (Arborvitae) topiary, particularly Thuja occidentalis 'Emerald Green' (Smaragd), offers a versatile, evergreen structure for formal, container, or entry-way landscaping. These shrubs are pruned into spirals, poodle tiers, or cones, providing dense green foliage with moderate growth (roughly 1 ft. per year) and high, 8–10 ft. vertical, 2-3 ft. wide, maturity.