If you do intend to keep it in a pot beyond the holidays, you may want to give it a larger container. To replant:Make sure the roots of the tree are soaked in a bucket of water. Fill the base of your pot with potting soil. Loosen your tree's roots and plant in the container. Use potting soil to fill the spaces around the root ball in the pot. Firm the soil around the roots.Continue to add more potting soil until the container is full (to just below the rim.) Water your tree to thoroughly, and be sure to water regularly.