Why would you put an egg shell in a flowerpot?
It's not enough to rely on pouring rainwater and running water, but also add some nutrients properly. An empty egg shell is a good nutriment
Like Shibie fat, more will "burn", less and not enough nutrition
There are some slower growing flowers, so you don't have to worry about giving them a few empty eggshells
Can become nitrogen fertilizer, nitrogen fertilizer is the flower
The empty eggshell just opened, with a little bit of egg white inside it, with the help of its "friend"