Answer:
The mood the author creates at the beginning of Marigolds is the mood of beauty.
Explanation:
At the beginning of Marigolds, marigolds represent beauty and happiness in the sad town and Miss Lottie's life which was boring and bleak. After Elizabeth comes and destroys the marigolds, Miss Lottie's life is once again dull and boring because she has nothing else to bring happiness to her.
Afterward, Elizabeth realizes what she has done and begins to regret her actions which have adversely affected Miss Lottie.