Flower by Eels is a poignant track that delves into themes of love, loss, and the beauty found in the fleeting moments of life. The song's lyrics are reflective and melancholic, often touching upon the transience of happiness and the inevitable passage of time. Key themes include the impermanence of life and the bittersweet nature of memories. Particularly poignant moments in the song include the imagery of a flower, which serves as a metaphor for something fragile and beautiful that doesn't last forever. This imagery underscores the song's meditation on valuing and cherishing moments before they fade away.