Arbor Day Holiday 2025 Usa. Arbor day is observed in spring for the united states but globally dates vary depending on the region's climate and planting season. 12 rows usa federal holidays for year 2025.
Planting trees in honor of arbor day is a longstanding american tradition that dates back to 1872, and while climate and landscape factors have changed since the holiday’s. And arbor day, the tree planter’s holiday, is tied so closely to our mission.