Quote Originally Posted by Espritduo View Post
"Diminishing return" refers to the overall value of repeatedly fertilizing, not to the actual items you get when you harvest. Fertilizing has zero impact on anything but the speed at which your plants grow and certainly doesn't hurt anything.
And you are 100% certain of this?

https://en.wikipedia.org/wiki/Diminishing_returns

As I understand diminishing returns is as Wikipedia states, getting to a point where the more you put in the less you get in return. ie. Less items from the harvest.