The Blue Pacific Juniper is a great groundcover. The Blue Pacific Juniper’s attractiveness allows it to function well in planter’s boxes or hanging over a retainer wall. It’s a hardy plant and reaches a mature width of 6 to 8 feet. The growth rate for the Blue Pacific Juniper is medium, and its versatility allows it to adapt to a full range of conditions. It thrives best in full sun, but can also thrive in partial shade.