• Yews are dense, evergreen shrubs.yew needles image by Fyle from Fotolia.com
  
  Zone 6 on the USDA Hardiness Zone map winds across a stretch of land in the upper Western United States, including states like Washington, all the way down to Texas and up again to Pennsylvania. Characterized by annual minimum temperatures ranging from -5 degrees F to -10 degrees F, a variety of both broadleaf and narrow leaf (needles) evergreens thrive in zone 6, giving your landscape color all year long.
  
  

Boxwood

• The common boxwood (Buxus sempervirens) grows as a large broadleaf evergreen shrub or small tree. Mostly seen in the form of a thick evergreen hedge, this shrub has small, dark leaves that look smooth and shiny. With a slow growth rate and a round shape at maturity, the boxwood handles harsh pruning well and grows 15 to 20 feet tall. In addition to growing as a hedge, it grows well as topiary or a border plant. This zone 5 to 8 evergreen shrub survives in most soil types and prefers full sun for the best growth.
  
  Other cultivars of evergreen boxwood include the Green Mountain, which grows in a pyramidal fashion and holds color better than other boxwoods. This boxwood only grows 3 to 5 feet tall.
  
  

Holly

• Broadleaf evergreen holly (Ilex species) shrubs come in wide variety of colors and sizes and thrive in zones 5 through 9. Holly Jim Dandy (Ilex verticillata 'Jim Dandy') produces shiny foliage and red berries. These red berries make it a popular border plant. The plant grows 3 to 6 feet tall, and its foliage turns yellow to purple in the fall.
  
  Another popular holly, Holly Castle Wall (Ilex x 'Castle Wall') bears vivid dark green foliage and bright red winter berries that give your landscape color all year long. This holly grows in a compact, pyramid shape that reaches 5 to 8 feet tall and works well as a hedge, foundation, or even as a specimen plant.
  
  

Yew

• Among the most popular evergreen shrubs is the Dens Yew (Taxus x media 'Densiformis'). With its rapid growth and bright green needles, it reaches 4 feet tall and 6 feet wide at maturity. This low-maintenance, narrow-leaf shrub grows best in zones 5 to 7, but it requires full shade and well-drained soil to thrive. During fall, the Dens Yew's green needles turn red to burgundy.
  
  The Hicks yew (Taxus x media 'Hicks') is another popular evergreen that grows in an upright, columnar manner and reaches up to 20 feet in height. The branches of the Hicks yew grow upward and are covered in multitude of needles that are light green on the bottom and dark on top. However, this yew does not grow well in areas of temperature extremes and prefers areas of full sun to partial shade.