People living in the West get their house plants from California. If you buy potted flowering plants such as poinsettias, Easter lilies, geraniums, or annual bedding plants at your local greenhouse or garden center, chances are good they were produced locally or in neighboring states. Similar plants at mass merchandisers usually are produced farther away, perhaps in Canada. Cut flowers travel the most from where they are grown, often more than most of us ever get to travel. Almost all carnations were produced in the Northeast a few decades ago, but now these flowers usually come from Colombia.
Many roses also come from South America, excluding miniature roses that often originate in Israel.
Exotic tropical flowers come from the South Pacific such as proteas from Australia, anthuriums from Hawaii, and orchids from Thailand. These cut flowers are flown by 747 jets, usually with a whole plane devoted to boxes of flowers. They are flown by night into such cities as Miami, Boston, or New York. From there they are distributed to flower markets, then to wholesalers, then to your local florist. Many are first flown to the large flower auctions of Holland before coming to the United States.