That is an excellent viewpoint concerning Miss Maudie's nutgrass being symbolic of her belief that racism must be eliminated by its roots. When it comes to her garden (and to her baking, especially her beloved Lane Cake), Miss Maudie is a perfectionist. Part of the beauty of her plants comes with the loving attention that she shows them. She knows that the nutgrass cannot be eradicated simply by "pulling them up"; like the racism rampant in Maycomb, it must be destroyed at its origins.
She worries about her plants on the day of the unseasonal snow that hits Maycomb, and she shows more concern about their possible demise than that of her house after it burns.
She loved everything that grew in God's earth...
and that extended to people. Although she criticizes Miss Stephanie's constant gossiping, she is Maudie's friend; and it is to Stephanie's house that Maudie moves temporarily until hers is rebuilt. She is quick to question Mrs. Merriweather's criticisms at the Missionary Circle tea, but she treats her with Christian charity and mannered politeness after receiving the news of Tom's death. She treats Jem and Scout as "our friend," rather than in the condescending way other adults speak to them. Maudie is obviously proud to call Atticus (and his brother, Jack) her friend, and she understands that he is the moral conscience of Maycomb. She does not
... go about the neighborhood doing good, as did Miss Stephanie Crawford...,
nor is she a "foot-washing Baptist," like old Mr. Radley. But her love of God's creatures--not only her plants but people, black and white--show her to be one of Maycomb's finest creations.