The Arbor Day movement began in the 1800s to promote conservation and beautification of the environment. Arbor Day is a Wisconsin School Observance Day and national observance day to encourage people to plant and care for trees. Observed in Wisconsin on the last Friday in April.
Enacted May 7, 1980, from the 1979 Laws of Wisconsin, Chapter 214.
More information and educational resources are available on the Department of Public Instruction Social Studies Education Observance Days website.