What are the various figures of speech in the poem, "The Flower School"? What symbolism is used throughout the poem?

In Rabindranath Tagore’s poem “The Flower School,” the speaker is a young child trying to explain the phenomenon of flowers blooming in the spring. The poem uses personification, metaphor, and imagery throughout to convey the symbolic meaning of the flowers.
The flowers are compared to schoolchildren, which is an example of metaphor. The speaker tells his mother that the flowers have to go to “school underground” before they are allowed to play during “holidays,” or the rainy season. This combination of personification and metaphor highlights the speaker’s imaginative, juvenile understanding of how flowers sprout and bloom.
The flowers, however, are not the only personified group in the poem. The speaker even personifies the “moist east wind” that blows “its bagpipes among the bamboo.” In the speaker’s view of nature, everything is alive with its own personality. This is further demonstrated in the last line of the poem, where the speaker likens nature itself to his own mother.
This metaphor of the earth as a mother and the flowers as children reveals that even the smallest things in life need to be nurtured in order to grow, both literally and figuratively. It also highlights the symbol of the flower: the speaker sees the flower as himself, since he believes the flowers need their mother to get to their “home” that is the “sky.” For the speaker, the sky represents his future goals in life as an adult, and his mother will nurture him until he is ready to get there on his own.
Each of these devices is laced with vivid sensory details to create a jubilant, hopeful mood. The flowers “dance” and the “branches clash together in the forest,” while “thunder-clouds” signal the flowers’ arrival. While most would associate stormy weather with something bad, the speaker in this poem views these natural elements positively, since they are the precursors of the beautiful, colorful spring blooms.