It’s a tried-and-true way to keep roses and other cut flowers fresh longer: Put a crushed aspirin in the water before adding your flowers. Other household items that you can put in the water to extend the life of your flower arrangements include: a multivitamin, a teaspoon of sugar, a pinch of salt and baking soda, and even a copper penny. Also, don’t forget to change the vase water every few days.
