Flower Power

Q: How do different additives affect the freshness of flowers?

Control: a flower in plain water.
Experimental conditions (2 liters each):

• Commercial preservative
• 1/2 teaspoon bleach, 3 Tablespoons sugar, and 4 teaspoons vinegar
• half a liter of lemon-lime soda and 1/2 teaspoon bleach, add 1/4 teaspoon bleach every 4 days
• 1/4 cup mouthwash
• a penny and one aspirin tablet