Who celebrates Arbor day?

Arbor Day is celebrated in many countries around the world, primarily in the United States, where it is observed on the last Friday in April. The holiday encourages individuals, communities, and organizations to plant and care for trees, promoting environmental stewardship. Various states may have their own specific dates and traditions associated with Arbor Day. Additionally, countries like Brazil, Australia, and New Zealand also have their own versions of Arbor Day, often focusing on local tree-planting initiatives.