What is this shrub, and when and how should I prune it?

This is a juniper. University of Memphis Director of Landscape Joellen Dimond says you should prune it in the spring. She also describes how to prune it correctly.

Related Videos:
How to Prune Shrubs
Hand Pruner Care – Garden Notes
Are these worms killing my junipers?

Related Resources:
Juniper
Juniperus procumbens