The idea behind square watermelons in Japanese supermarkets by Japanese farmers is to make them easier to store, transport, and display.
Square watermelons, are much easier to stack and store, and they are less likely to roll around. This makes them a more attractive option for supermarkets and retailers.
In addition, the square shape of watermelons is seen as being more aesthetically pleasing in Japan. Japanese culture places a high value on beauty and symmetry, and the square watermelon is seen as a symbol of these qualities. As a result, square watermelons are often given as gifts or displayed at events.
Some drawbacks to growing square watermelons:
They are more expensive to produce.
They have a shorter shelf life.
They are not as juicy as round watermelons.
I find it fascinating that square watermelons are grown in a square box. It is a unique and innovative way to grow fruit, and I think it is a creative solution to the problem of round watermelons rolling around and getting damaged. Them being ornamental as an outcome is just another example of how people can experience the same thing differently.