What components make up floral preservatives?

Floral preservatives are specifically designed to extend the life of cut flowers by providing essential nutrients and inhibiting the growth of bacteria and fungi that can shorten the flowers' lifespan. The correct composition includes sugars, which serve as nourishment for the flowers, a biocide to eliminate harmful microorganisms, and an acidifier to adjust the pH and enhance the uptake of water and nutrients. This balanced formula ensures flowers remain hydrated and healthy for a longer period.

Other combinations, such as just water and sugar, or salts and sugars, do not encompass the crucial roles played by biocides and acidifiers, which are key to preventing decay and optimizing water uptake. Additionally, starches and enzymes do not provide the necessary preservation benefits or nutrients that cut flowers require to thrive post-harvest. Thus, the formulation described in the correct answer maximizes the effectiveness of floral preservatives.