The force that through the green fuse drives the flower
Drives my green age; that blasts the roots of trees
Is my destroyer.
And I am dumb to tell the crooked rose
My youth is bent by the same wintry fever.
The force that drives the water through the rocks
All stanzas (except the last stanza) consist of five lines, with the middle shorter than the rest. Also what makes it different from the rest of the lines is the form: most lines are iambic pentameters, however, the third lines have two metrical feet.
The Force That through the Green Fuse Drives the Flower