Water is essential for maintaining the health and vibrancy of your Christmas tree. When you first bring your tree home, give it a good drink of water to help it adjust to its new environment. Make sure the water reaches the base of the trunk and keep the tree well hydrated by refilling the water reservoir frequently. Adding a water additive like a preservative or tree conditioner to the water can also help extend the tree's life. It is also important to keep the tree away from heat sources, as this can cause it to dry out faster.