植树 zhíshù plant trees Definitions Defs Origin Strokes Stroke Words Sentences Sents 植树造林 zhíshùzàolín afforestation 植树节 Zhíshùjié Arbor Day Arbor Day (March 12th), also known as National Tree Planting Day全民义务植树日 Quánmín Yìwù Zhíshùrì Arbor Day National Tree Planting Day (March 12th), also known as Arbor Day