Fertilizer

Fertilizer is an item introduced in which can be purchased from Leif at the Gardening Store or, later, T&T Emporium.

It's main purpose is to increase the likelihood of flowers breeding (known as hybridization) and for fruit trees to grow a piece of Perfect Fruit.

There is a common rumor that fertilizer aids in the regrowth or grass after it has been deteriorated, this is however untrue. It is only used for the aforementioned purposes.