Arbor Day in New Zealand Date in the current year: June 5, 2024

The first Arbor Day was observed in Nebraska, the USA in 1872. On July 3, 1890 the first unofficial celebration of Arbor Day was organized in New Zealand and already in 1892 the tree planting events were officially brought to the national level. Until 1914 observation of Arbor Day was promoted by government and many events were organized at schools and service organizations. At that time people received a day off to go outside and plant exotic trees. The events were usually organized during July or August.

The event was revived in 1934 and since 1977 it's celebrated on June 5, coinciding with World Environment Day. The government of New Zealand promotes Arbor Day and holds annual events for planting native trees, that would restore the habitats damaged or destroyed by humans, weeds and pests. Many organizations participate in a long-running governmental project for protection and restoration the indigenous biodiversity.