main idea is There was a big long rain and beautiful flowers grew across mountains and they were better than what the people had predicted and everyone was so surprised at the flowers growing in a desert.
the theme is of a fable is its moral. The theme of a parable is its teaching. The theme of a piece of fiction is its view about life and how people behave. In fiction, the theme is not intended to teach or preach. In fact, it is not presented directly at all.