7 dl Water
1 ts Vinegar
1 ea Aspirin or equivalent (containing acetylsalicylic acid)
1 ts Sugar Crush the aspirin and blend everything together and use.
The sugar is nourishment for the flowers, while the acid kills the micro organisms that block the stems from sucking up water. For roses you can also use a lemon soft drink (For example:Schweppes). Makes the bouquets last longer.