Translation:Shulchan Aruch/Orach Chaim/226
226: Someone Who Sees Tree Blossoms, What Blessing Does He Recite. Contains one section.
1 Someone who goes out in the days of Nissan and saw trees blooming says: "Blessed are You, Adonai, Our God, King of the World, Who left no lack in His world, and created in it good creations and good trees, that mankind should benefit with them."