Final answer:
In Sonnet 73, the speaker uses nature imagery to reflect on the passage of time and the transience of life.
Step-by-step explanation:
In Sonnet 73, the speaker does not equate his age directly to a blooming tree. However, the speaker uses the imagery of the changing seasons to reflect on the passage of time and the inevitability of aging.
The speaker compares his aging process to the changing colors of nature, such as the fading leaves in autumn or the bare branches of a tree. This imagery suggests that like nature, the speaker's youth and vitality are gradually fading away.
Although the speaker does not explicitly compare his age to a blooming tree, the use of nature imagery in the poem helps to convey the theme of mortality and the transience of life.