I need help understanding this poem?

I think this poem is quite beautiful, and a wonderful thing about poetry like this is that it is whatever you make it. To me it is about the soul, and about how the soul longs for freedom and beauty. Like when he says the erfly goes away way up high surely because it wishes to kiss the word good bye, I believe that is more the poet wishing he could do the same. He loves the dandelions and the white chestnut branches because they are beautiful even in the ugly ghetto.