Describe your suggestion:
When breaking a tree's leaves while wearing the crown of growth it will double the chance for a sapling to drop ensuring trees with little leaves are guaranteed to drop at least 1 sapling. The crown also increases growth of crops in a small radius around the player. It's also crafted

Describe alternatives you've considered:
When breaking leaves with a sickle It has the same effect

Additional context:

My texture looks terrible, but you get the idea