Where can I find a Leaf Stone?
Solution 1:
It looks like there are three ways to get a Leaf Stone in Crystal specifically. From here:
In Crystal, there are three ways to get a Leaf Stone:
Show Bill's Gramps an Oddish.
Get the Picnicker's Phone number on Route 34, and somtimes she will call and give you a Leaf Stone when you talk to [her].
You can also get one from Mystery Gift (very Rare).