The most common species of conifers used as Christmas trees are white pine, Scots pine, Douglas fir, balsam fir, Frazier fir, concolor fir, Canaan fir, Colorado spruce and white spruce. Norway spruce are not recommended because they shed needles rapidly if allowed to dry out once. In more southern states, Virginia pine, white cedar and red cedar and often used.       Most growers purchase seedlings from nurseries that specialize in growing these species from...