should you put sugar in christmas tree water

Not unless you want an ant infestation. That's a common myth that feeding your tree sugar will help keep it fresh. In reality, sugar can actually attract ants and other pests, and it can also damage the tree's roots. Instead, water your tree regularly and use a proper tree stand to keep it stable. If you want to keep it as fresh as possible, you can mist it with a spray bottle every few days.