Crush up two over-the-counter aspirin with a spoon in a bowl. Once they are crushed, put the dust in the water that your flowers are in, then add a penny to the water. While it has shown varying results, adding a penny should work as a fungicide which should collect bacteria. The aspirin works to increase the water's acidity, which helps water absorption.Asprin has been shown to increase the life of freshly cut carnations., While unproven, the sugar in the soda should provide the energy your flowers need while the bleach should control bacteria. Add one cup of lemon-lime soda, such as 7Up, one cup of water, and a 1/2 teaspoon (2.5 mL) of household bleach to the vase that is housing your flowers.You should still replace the water every couple of days when using homemade remedies.
 Add two ounces (59.14 mL) of mouthwash per gallon of water to your flower vase. Mouthwash like Listerine contains sucrose which can act like food and also contains a bactericide which should eliminate bacteria that forms in your vase.


Another benefit of mouthwash is that it acts as an acidic which helps your flowers with water absorption.
Put aspirin and a penny in your vase.
Mix lemon-lime soda, bleach, and water together.
Add mouthwash and water to your vase.
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