Explain how the images in the poem "the tropics in new york" convey the author's impressions of his homeland.

The images in this poem convey the author's sadness and longing for his home country because they are rich, colorful, and he describes them with heightened reverence. He even uses the religious image of "mystical skies In benediction over nun-like hills" (meaning it feels like the skies are praying over the hills that look line nuns) to show how much he respects his home land. 

The speaker  wonders  what happens to a deferred dream. he  wonders  if it dries up like a raisin in the sun, or if it oozes like a wound and then runs.