Fertilizer and Perfect Fruit?

[ayeeprill]

How exactly does this work? When are you supposed to use the fertilizer? When you plant it? The day before it's supposed to spawn fruit? Right after you harvest fruit? Every day?

I just cannot figure this out. Anyone know?

 

[MadisonCrossing]

I really don't remember any of this either, but LinandKo have a video about perfect fruit here.
And it takes 3 days for fruit to spawn again, by the way, but if you're still confused about perfect fruit the link is above. I used to be confused until I actually e-mailed Lin/watched the video, so I hope it really helps!