Needle-bearing evergreens such as spruce trees and yew bushes are truly a landscaping staple. Also known as conifers, they provide winter interest in your landscaping, long after deciduous trees have lost their foliage. As with any shrubs or trees, if you're going to grow conifers, you should learn the basics of pruning conifer trees. Learn all about pruning conifer trees through the National Gardening Web site.