Merican Literature… Neighbor Rosicky by Willa Cather

Read from the following link Neighbor Rosicky from Willa Cather:
willa-cather-neighbor-rosicky.html

Then, Answer the following question (AS PROFESSIONAL AND DETAILED AS POSSIBLE):

5. In Neighbor Rosicky,how do the THISTLES (pp.109-110) METAPHORICALLY represent Antons main problem? Be sure to consider the exact location of the thistle-plagued alfalfa.

NOTE: YOU MUST READ AND UNDERSTAND PERFECTLY THIS POEM IN ORDER TO ANSWER THAT QUESTION (Its a final paper).

HINT: Antons main problem is related to Polly and how she will affect Rudy and its family with her City Lifestyle. Discuss about the desire of Anton to transform her from a city girl to a country girl, etc… Everything that you consider important just add. Analyze images and metaphors as well.