What can preserve a cut flower other then sugar?
There are prepackaged mixtures of nutrients available in garden stores
that are balanced to extend the blooms of cut flowers. You can find
packages of these products and read the list of ingredients.
Alternatively, and probably more informative, to visit a garden nursery or
florist and ask. I'm sure they will more than happy to not only give you
the information on the composition of these products, but would likely be
willing to explain what each ingredient contributes to the effectiveness
of the product.
to preserve a cut flower in a vase you can add
some half adult aspirin solved in some water.
Usually that adds some time to flowers.
Thanks for asking NEWTON!
(Dr. Mabel M. Rodrigues)
Various methods noted here:
Anthony Brach Ph.D.
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Update: June 2012