Concept:
• Metaphors using botanical imagery like "flowers" or "blooms" typically signify peak health, beauty, and successful growth.
• In the poem, this phrase is used to contrast the vibrant urban environment with the struggling rural one.
Step 1: Analyze the word choice 'flower'
A flower is the most delicate, beautiful, and sought-after part of a plant. In an urban context, this refers to the luxuries and the successful facets of city life.
Step 2: Connect to the appropriate adjective
"Prosperity" refers to the state of being successful and wealthy, which aligns perfectly with the image of a city that is flourishing like a flower.
Step 3: Contrast with the alternative
Poverty is characterized by lack and decay, which would be represented by "withering" or "sinking"—the very things the poet says the cash flow prevents.