Arbor day.

RCW 1.20.060
in effect
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The second Wednesday in April of each year is designated as Arbor day. The second Wednesday in April of each year is designated as Arbor day.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=1.20&full=trueFetched: 6/28/2026

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