If you add tree or floral preservative when you water your Christmas tree it really will extend its life. It's easy and inexpensive to make your own solution
, rather than buy a commercial product. There are several 'recipes', all using common household ingredients. In addition to water, they include three basic components: a food source for the plant, an acidifier to reduce the pH of the water (helps the tree absorb water and food), and a disinfectant to prevent the growth of algae, fungus, and bacteria.
Now... some recipes call for mixing bleach and vinegar, which I really don't recommend
. However, at the low levels of bleach used in tree preservative, you should be ok, as long as you make the solution in a well-ventilated room and add only a small
quantity of bleach to the solution (don't mix it directly with vinegar or lemon juice). Adding a penny to the solution, instead of bleach, is one alternative some people use.