What are the explicit and implicit assumptions about class, race, and gender in the text?

Some explicit assumptions:  The neighborhood is diverse – a variety of races and ages are represented.  Planting flower gardens is a project of beautification.  Everyone participates in gardening.

Some implicit assumptions:  The neighbors know one another, interact with one another, and are on friendly terms. There is a sense of acceptance here.  Planting vegetables could possibly be an economic necessity or a desire for culturally specific plants.

And some questions:  Is this a representation of a single mother?  Has the expression of the family’s biculturality changed from generation to generation?