Okay, so in Heart Gold and Soul Silver, some Pokemon will always (or always have a chance at) a certain Pokemon if you Headbutt the same tree, as said from Serebii. If you Headbutt some trees, and if they have no Pokemon come out, they will never have encounters with Pokemon!
They only have a few listed, which are pretty cool and helpful of course but the problem is l'm looking for a different Pokemon. I want to Headbutt a tree that only has encounters with Pineco. The problem is, l don't have a spot, nor does Serebii!
If anyone knows a spot that has Pineco, do share!
*If the Pokemon listed in Serebii are the only ones with trees that have absolute encounters, while the other trees are completely random, hide this question and don't mind it anymore than!