Arbor Day 2025 New York. Arbor day—which literally translates to “tree” day from the latin origin of the word arbo r—is a holiday that celebrates the planting, upkeep and preservation of trees. The new york state department of environmental conservation has announced the start of the agency’s annual arbor day poster contest.

Our planet needs all of us, more than ever. National arbor day is always celebrated on the last friday in april, but many.