When Lilacs Last in the Dooryard Bloom'd is a pastoral elegy poem by Walt Whitman mourning the death of Abraham Lincoln. It uses nature imagery and symbols of a funeral procession to meditate on death and acceptance. The poem follows three simultaneous narratives - Lincoln's coffin journey, the poet's thoughts on death and mourning, and nature as separate yet sympathetic to humanity. The language shifts from formal rhetoric at the beginning to a more informal tone by the end.