No, I know we have flower shops. But they're the pick-out-some-pre-made-bouquet kind of flower shops. They're not flower shops like the Czech flower shops.
The way it works is that you go in and pick from a long wall of indivual flowers any combination of number, kind, color, height and size that you think works, and hand the bunch over to the lady behind the counter. She then adds greens, etc, and arranges it into a pretty bouquet for you. And then you take it home and *ahem* hopefully don't make a fool out of yourself on the bus by admiring your hand-picked color combinations the entire ride with a silly grin on your face.