When Cameron visits his aunt Jeanne in "The Welina Mobile Park Is for Lovers," why are she and Jimmy Delmonico arguing?

When Cameron comes to visit his aunt Jeanne at the Welina Mobile Park, he can hear her and Jimmy Delmonico, the landlord, arguing. Jimmy tells her that Sissy Baker saw the eyes of a snake in Jeanne's clematis, so Jimmy tells her that she has to remove it. Jeanne tells him that there are no snakes in the clematis, and Cameron backs her up.