Boxwood is such a generic term in the plant world, many gardeners don't really think about the different varieties that are available for the home garden. 'Green Mountain' boxwood is one of the slower growing varieties, topping out around five feet tall and three feet wide if left in its natural form. Hardy to -30 degrees, 'Green Mountain' boxwood does well in the Pacific NW for year-round interest. It's an excellent option for hedges or privacy barriers, as well as topiaries in container planters or in the ground for formal landscapes. Topiary pros suggest waiting until after the last spring frost to prune boxwoods, as pruning stimulates new growth, and a late freeze could damage tender new tips. 

A footnote for online shoppers: the 10 gallon size specimen is available for local pickup or delivery only.