You can't; you must evolve your Turtwig starter.
you cant you have to start with turtwig and evolve it or trade with someone
a trainer in victory road have a torterra
You can only get Torterra from Diamond, Pearl, and Platinum.
In pokemon diamond and pearl
if you means torterra, only if you have chosen turtwig as starter, or traded turtwig, grotle or torterra
You cant find a Torterra, you have to start off with Turtwig from the very start or trade a Pokemon with someone.
Turtwig is a starter pokemon in Diamond/Pearl/Platinum, Torterra is one of the evolved forms of Turtwig.
you need to have a carnivine and go to the single patch of grass at the bottom of mount coretnent near snow point city. then stand in it and make your carnivine use sweet scent. The torterra you catch will only be lv 20 or if you are lucky 30 or 40.
You can't catch Torterra or any other starter in any game. You must transfer it from Pokemon pearl/diamond/platinum. Use the transfer lab that is on the route SW in black city/white forest.
you can pick one in the beginning of the game
You must evolve it from the grass starter.
yes, you can catch Pokemon in Pokemon diamond