I believe the correct answer is gods.
When Cortés first arrived with his army to
Tenochtitlan, the capital of Aztec empire, Motecuhzoma II Xocoyotzi, the ninth ruler,
believed Cortés to be the Aztec god Quetzalcoatl, whom they credited with the
creation of humans among other notable feats, was set to return to Earth.
The Chopin nocturnes consist of 21 pieces for solo piano written by Frédéric Chopin between 1827 and 1846.
My interpretation of this is that the author was hoping for something futile - they 'grew a flower' (put effort or hopes toward) that can't be bloomed (is pointless or futile, will not produce anything) that can't come true (their effort/hope is just a hopeful dream). Basically, the author hoped for something that was not possible.