Like other agriculture markets, the prices of products are
largely dictated by supply and demand.
For example, for Valentine’s Day, on average, more than 100 million roses are sold nationwide.  Growers start on their rose crops after Christmas and require additional labor at all levels of production.  Since the holiday falls in the middle of winter there are higher heating costs, and because of the volume of roses additional transportation and delivery are also needed.  Each of these factors contributes to the
proportionate cost of flowers during Valentine’s and other major floral holidays.