@Always, talking about Shlomo Hamelech and educating one’s son with the rod, let’s not forget what Shlomo’s son Rechavam said about the rod:
“אבי יסר אתכם בשוטים ואני איסר אתכם בעקרבים”
If you have any memory of what you learned in school, you remember how well that worked out.
Balance is always important.
[I just noticed that the source is: מלכים יב יד.
Ironically, the source for ירק ירק is: במדבר יב יד]