Tower
When dirt and flowers suit one another, the flowers grow so tall that they make a tower! A flower tower made of flower power!
Imagine walking in the woods and coming across a huge tower made of flowers. It goes so high you can hardly see the top.
とう
None
None
The only place flowers grow into towers like this is in とうきょう. とうきょう dirt is the best. とうきょう flowers are the best. Thus, you end up with a lot of とうきょう towers.
How do you think the とうきょう tower came to be, anyway? It was once a big flower tower. They just replaced it with metal later. BOOM! History bomb, you're welcome.