What Americans actually buy
Roses are the flower Americans name and the flower they give, but they are not the flower a shop moves most of across a year. The steady volume sits with the flowers that survive a hot car and a week on a kitchen table: carnations, chrysanthemums and alstroemeria. All three are cheap, all three last two weeks or better, and all three turn up in mixed bouquets far more often than anybody notices, because nobody buys a bouquet by asking for them.
The supermarket is a bigger part of the picture in the United States than most people assume. A large share of stems sold here never pass through a florist at all, which is why the flowers that ship well and hold up under fluorescent light have quietly become the ones the country buys most of.
The ranked list of what leads worldwide, and why each one earns its place, is in the top ten most popular flowers.