Evergreens are trees that keep their leaves year-round. They were revered by people in pre-Christian Europe, who decorated their homes with evergreen boughs to celebrate the winter solstice. Evergreens are still widely used in Christmas decorating; their dark-green leaves and bright-red berries are synonymous with Christmas in many societies. Evergreen trees are also attractive additions to gardens and landscaping.
The yew tree, or Taxus baccata, is native to North Africa and Europe. These are densely branched evergreen trees with dark-green needle-like leaves, reddish-brown bark and red berries. Yew trees grow to be approximately 9 to 15 m (30 to 50) feet tall with a 6 m (20 foot) spread. Yew trees do not do well in extreme heat, cold or wind. They prefer well-drained moist soil with either full sun or partial shade. They are attractive as hedges, mass plantings or ornamental trees, among other landscaping uses.
Toyon, or Heteromeles arbutifolia, is also known as the California holly, California Christmasberry and Christmasberry. These small evergreen trees or shrubs can grow as tall as 4.5 or 6 m (15 or 20) feet, but they usually grow to be between 1.8 and 2.4 m (6 and 8 feet) tall with a 1.2 m (4 foot) to 1.5 m (5 foot) spread. Toyon trees are popular during the Christmas holidays because of their dark-green leaves and bright-red berries. They prefer dry, well-drained soil of poor quality and can grow in either sun or shade. Toyons are drought-tolerant and adaptable to a variety of different growing conditions.
English holly, also known as common holly cor European holly, is native to Europe, but was also introduced into the United States for decorative purposes. These slow-growing shrubs or small trees can grow as tall as 15 m (50 feet) under the right growing conditions, but they usually grow to be between 4.5 m and 9 m (15 feet and 30 feet) tall. They have thick, waxy dark-green leaves with spines along the edges. They produce small white flowers in early to midsummer. The flowers are replaced by berries that ripen to a bright red by late autumn. Only female trees produce berries, however, so plant male and female trees together if you want berries. English holly grows in full to partial sun and is tolerant of nearly any type of soil or moisture level.
American hollies are native to the United States and occur naturally in the southeastern portion of the country. They grow to be as tall as 15 m (50 feet). They have stiff, oval-shaped dark-green leaves, light-grey bark, a pyramid or Christmas tree -- shaped form and bright-red berries. They prefer well-drained acidic soil and full sun or partial shade. American hollies are drought-resistant and require no pruning to maintain their shape. Plant American hollies in small groups or as specimen trees. Plant male and female trees together to get berries.