In 1959, the first Spalding Tulip Parade took place, and continues to this day around the end of April. I grew up in this area of the UK, South Lincolnshire ,known for its flat landscape very much much like the Netherlands complete with dikes and windmills. The floats can be as much as 50ft in length and may be decorated by as many as 100,000 tulip heads.
In years when the tulips are late, daffodils or hyacinths are sometimes used in their place. When the tulips are early,crepe paper has to be substituted.
I found a delightful video clip, which I hope you will be able to view