The tulip is not the national flower of the Netherlands. Although it is widely associated with the country, the daisy is the national flower of the Netherlands.
The Netherlands doesn't legally have a national flower; there was a radio survey in 2023 that asked 53,000 people, but that was specifically about wildflowers native to the Netherlands, which the Tulip is not. However, most people agree that as a symbol of the Netherlands, the tulip is far more widely used anyway, certainly internationally. However, it is also not legally the national flower because the Dutch don't actually have one.
The Netherlands doesn't legally have a national flower; there was a radio survey in 2023 that asked 53,000 people, but that was specifically about wildflowers native to the Netherlands, which the Tulip is not. However, most people agree that as a symbol of the Netherlands, the tulip is far more widely used anyway, certainly internationally. However, it is also not legally the national flower because the Dutch don't actually have one.