Zelda ocarina of time question.?

well, a little background. i have probably beaten this game around 4 or 5 times. okay. anyways, there is a patch of soft soil in the lost woods right next to the deku stage. I planted the magic bean there, but as an adult all it does is lift me up to a ledge with nothing on it. what is the purpose of this? i have never been able to figure it out. any help would be awesome. thanks!