Thuja plicata 'Excelsa'
Height: 30-40 ft.
Spread: 10-15 ft.
Growth rate: M2-3 ft. per year once established
Sunlight: Full or part shade
Attributes: A cultivated variety of the NW native Western Red Cedar, with a dense, symmetrical habit. Great for screening, especially useful where an Emerald Green hedge doesn't have the height you're looking for but size it still an issue. Tolerant of trimming/shearing to maintain size.