Make flowers last longer

Keep your flowers fresh and extend your pleasure for longer with this homemade recipe. You will need:
1 litre warm water
1/4 teaspoon household bleach
11/2 tablespoons sugar
10 millilitres of vinegar or squeeze a lemon

Dissolve the sugar in the warm water, than add bleach and vinegar. Chill the mixture before use. The sugar serves as an energy source, the vinegar as an acidifier to lower the pH of the water and prevent blockages in the stem, and the bleach works as a bactericide to destroy microscopic bacteria.