somewhere
you have to go to certain towns like the tree play
There is many types that you can get like wormple and haricross basicly ALMOST any bug/grass Pokemon
There are two known glitches in Pokemon Ruby/Sapphire. 1) Tree Glitch, cut down a tree and walk on that space save and turn off game. When you start the game again you will be on the tree. 2) Thunder Glitch, occasionally when you use thunder the sound will continue until you win/lose the fight, and then your game crashes.
No, regigaigis is a fourth generation Pokemon and Pokemon Sapphire is a third generation game. zoo3891 says, above is correct but you can transfer the tree regis to diamond/pearl/platinum and then go to the snowpoint temple and catch regigigas on floor b3
a honey tree
you can find him in a honey tree.
The rarest Pokemon is Munchlax, but you can find it only in the Valley Windworks honey tree.
Its a rare Pokemon you can find on a bated honey tree.
a honey tree
In the monfernape tree.
you can find in a spesial tree.
Yes, you can get them from tree's