Throughout the poem, the speaker uses metaphors and similes to compare the different stages of her life to the cycle of a blossom's growth. For example, she describes her childhood as a time of innocence and wonder, when she was "like a blossom, just beginning to bloom." She then compares her adolescence to a time of growth and change, when she was "stretching and reaching for the sun." Her adulthood is described as a time of fulfillment and accomplishment, when she has "reached her full potential."
However, the poem also acknowledges the inevitability of death and decay. The speaker knows that, like all blossoms, she will eventually fade and die. But she finds comfort in the knowledge that her life has been meaningful and that she has made a difference in the world.
In conclusion, the theme of transformation and growth is developed over the course of the poem through the imagery of blossoms and the metaphorical journey of a woman's life. The poem shows how experiences can shape a person and how even in the face of death, life can be meaningful and fulfilling.