It could also be about change. Maybe the story uses the mango tree as a constant while the characters around it go through various changes. The tree witnesses their growth, their joys, and sorrows, and through this, the theme of change and the passage of time is explored.
There might be a group of friends as the main characters. They meet under the mango tree regularly, and their friendship, their adventures together, and the conflicts that arise among them form the core of the story.
The main theme is often about love and growth. The story might explore how the characters develop in their relationships while being in the setting under the oak tree.
One possible theme could be community. Since the stories are told under the mango tree, it might be a place where the community gathers and shares stories, highlighting the importance of community bonds.
Love is a major theme. The relationship between the main characters and how it evolves in the story is central to the plot.
The main theme could be love and self - discovery. The story might explore how the characters find themselves and form deep emotional connections while in the setting under the oak tree.
The main theme could be growth. The fig tree might symbolize growth, either of a character or of a situation in the story.
I think the main theme could be about survival. In many short stories, characters face various challenges and have to find ways to survive, and perhaps 'the fever tree short story' is no different.
The main theme could be isolation. In the story, the characters might be isolated from society or from each other, creating a sense of loneliness.
The main theme could be about the fir tree's longing for something more in life. It might be about its desires and how they lead it through different experiences.
One possible theme is sacrifice. The flowering tree, being a living entity in the story, might have to endure certain hardships or make sacrifices. This could be paralleled with the experiences of the human characters in the story, where they also face situations where they have to give up something for a greater good or for the sake of others.