Bonemeal Item

Hello guys,

I want to make an item similar to the bonemeal. Simply as dat, when its used the plants around you will grow or if you use the item on a sapling this will grow too.

Unfortunally I don't know how to make this possible, Is there any procedure to simulate the bonemeal effect?

Or if you can explain/teach me (or show me with pics) how I can make this possible I will be so greatfull.

Thank you