A REAL Christmas tree should be treated like any cut flower or plant being brought into a warm, dry atmosphere. If you are not erecting your Christmas tree immediately, store your tree in a cool and wind-sheltered spot. This will open up the pores in the bark to allow water to be taken up by the tree via capillary action.
As soon as possible after this, stand the Christmas tree in plain water, not soil or sand, in a bucket or a water holding stand.
Try to place you Christmas tree in its water-holding stand away from any direct heat. Keep the water topped up – a tree will drink between 2-3 pints a day of water. It is essential to keep doing this as once the water drops below the trunk, sap will reseal pores in the tree’s bark and prevent the tree from taking up any more water.