Enough water, a proper sized stand, cool temperatures and low-heat lights will help your Christmas tree stay fresh and reduce needle loss.
After you buy a Christmas tree from a retailer or cut it at a tree farm, you still need to follow a few steps to assure the tree will stay fresh when it’s displayed at home. The National Christmas Tree Association
provides the following tips on caring for your tree.
By following these care tips, you can enjoy your fresh Christmas tree throughout the holiday season.
Source:
National Christmas Tree Association. Here you can also find additional information about fresh Christmas trees, plus photos including the 2005 White House Christmas Tree below.
For a guide to various species grown for Christmas trees, see the related article, Types of Fresh Christmas Trees.