White House Christmas tree Henry Hoover began the tradition of presidential wives decorating the White House tree with the first "official" White House Christmas tree in 1929. In 1961 First Lady Jacqueline Kennedy began the tradition of selecting a theme for the White House Christmas tree by decorating with a Nutcracker motif. As stated, there were years where no indoor White House Christmas tree was installed at all. It is verifiable that there was no Christmas tree in the White House in 1902, 1904, 1907, and 1922. The lack of a tree in 1902 was due to the fact that President Theodore Roosevelt had
Propagation of Christmas trees in certain climates where other varieties of the same species cannot. This same genetic variation can also produce trees that are aesthetically more pleasing than others. Knowledge of the seed source allows the nursery to provide trees that are suitable for their customer specific locations and needs as well as satisfy the desires of the end-purchaser who will take the tree home for Christmas. Scientists are working on methods to reduce the costs of artificially producing seeds for White spruce, Norway spruce, and Douglas fir through somatic embryo production in a liquid medium. This method uses the living cells of