On pokemon diamond what lvl does turtwig evolve on?

Question

ive beaten the game once but i forgot what lvl can anyone help me?

Answer 1

Turtwig evolves at level 18. Then, Grotle, evolves at level 32 into Torterra.

Answer 2

Turtwig evolves into Grotle at level 18.

Grotle evolves into Torterra at level 32.

Don't stop it when it evovles into Torterra at level 32, it'll learn Earthquake after evolve.  

Answer 3

lvl 18 hope it helps

Answer 4

at lvl 18 and then at 32 and at 32 it learns earthqake

Answer 5

18 and 32. I started with it.