Well, first it is spelled Turtwig and it evolves to Grotle at level 18 and then Torterra at level 32
You have to choose it as a starter
You can't catch it. You have to either choose it as a starter, or trade to get it.
wailod does not evove
lvl 20
it does not evolv by lvl. use "upgrade" to evolv into porygon 2 and "dubious disk" to evolve into porygon z
Gibite evalves into garchamp
it evolves at lvl 36
At level 39 or before :p
Capture a seedot in viridian forest then evolv it
You can't catch a turtwig, you can only get it through a pokemon dream world event
Lvl. 36. Just like your three starters.
to evolve electabuzz to electvire you have to trade it while holding an electirizer