How does Mario Vargas Llosa use imagery in Aunt Julia and the Scriptwriter?

In Chapter Two, Pedro tells the story of Dr. Alberto Quinteros. In the opening lines, he paints a picture for the reader as well as the audience, saying, "On one of those sunny spring mornings in Lima when the geraniums are an even brighter red, the roses more fragrant, and the bougainvilleas curlier as they awaken..." Television hasn't made its way to Peru yet so Pedro has to encourage his readers to envision first the environment the character is in. He also accomplishes the imagery by using Lima as the backdrop of the story. His target audience would be familiar with the location, the seasons, even the flowers.