Belle Plaine, Kansas, home of the Bartlett Arboretum has held its Tulip Time Festival on the third weekend in April since 1986 with arts and craft, live music, carnival, and other fun and games. Belle Plaine used to be famous for having the most tulips planted in one spot in the USA.
Fulton, Illinois's Dutch Days festival is held the first weekend of every May. It was first celebrated as an "Authentic Dutch Dinner" in 1974 by the local Christian school.