The lack of nourishment for the surviving plant in "A Raisin in the Sun" symbolizes the struggles and aspirations of the Younger family. Just as the plant fights to survive in a challenging environment, the family's dreams are stifled by poverty and systemic barriers. The plant's resilience mirrors their hope for a better future, despite the obstacles they face. Ultimately, it reflects the broader theme of perseverance in the pursuit of one's dreams.