The key for gardening successfully with pines is to choose among the thousands of dwarf pine cultivars. Wild-growing pines quickly become too large for all but the grandest gardens, as the photo of the sugar pine demonstrates, although amongst the approximately 100 recognized species in the genus Pinus there are many trees with attractive features. Pinus lambertiana (sugar pine) growing in the southern California mountains To truly be a pine tree, a conifer must belong to the genus Pinus. Most Christmas trees sold in this country are firs or spruces, despite the fact that they are often referred to as pine trees. However, those roughly 200 species in Pinaceae include not just pines, but firs, spruces, cedars, hemlocks and larches. Many of us have a tendency to refer to all conifers as pine trees, which is not illogical considering that the pine family (Pinaceae) is the largest family of conifers and accounts for approximately ΒΌ of all cone-bearing trees (the definition of a conifer is a plant that bears cones). ![]() Additions to the International Conifer Register.
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