A. E. Housman emphasizes the word "now" in the poem C. To draw attention to the importance of living in the present moment.
Blooming cherry trees are the main topic of this poem as well as springtime. Springtime represents resurrection and, in this way, the speaker is also going through his own resurrection by this change of season. The word "now" is repeated to emphasize that we should get the most of our lives and enjoy the present, admiring nature to its maximum extent.