This paragraph is super... choppy. It needs to be more fluid. Also, the hook is, well, not present. They have a good start with "Growing flowers is one of my happiest childhood memories." You should build more on this idea of why gardening makes you happy. Through these memories you could share what you gain from gardening, and why you should stop thinking just about the time it takes but also the profit you can earn. To get rid of this "choppiness" you connect through the memories.
Hope this helps!
"Visiting Narnia one always finds that more time has passed there than on Earth, but there does not seem a fixed rate: between The Lion, The Witch and The Wardrobe and Prince Caspian, about a thousand years have passed in Narnia, but between that and The Voyage of the Dawn Treader only three years"
Or if you needed information in this direction, the last book was published on September 4, 1956.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Underneath because it is the same meaning of the proposition Under
I think it might be “It introduces the story and sets up the coming events.” I’m not sure so take this with a grain of salt...