When does the grass grow and the warbler fly?

Spring. Spring is the season of recovery. Grass will recover from dormancy and germinate again in winter. Due to the warming climate, orioles will fly back to the north from the south. The grass grows and the warbler flies to describe spring. The first season of the year, our country customarily refers to the three months from beginning of spring to long summer, and also refers to the first month, February and March of the lunar calendar.