What ingredients prolong the life of a cut flower?
There are many simple, household ingredients that can be used to
prolong the life of cut flowers. Anything that will increase the
acidity of the water thus lowering the pH level will help the
flowers. Possibilities include (but are not limited to) aspirin,
vinegar, 7up or any lemon/lime soda, and real lemon or lime juice.
Sugar is thought to provide nutrients to the cut flowers. Some type
of bleach additive is also recommended because it prevents the
growth of bacteria in the water. The best mix would include
something acidic, plus sugar, plus a little bleach although any of
these individually is thought to be better than plain tap water.
The powder packets provided by florists contain a mix of acid,
sugar and an anti-bacterial of some sort.