What's a good moveset for an Adamant Torterra in Platinum?

I'd go with Rock Slide over Stone Edge - it's only slightly weaker and the extra PP is nice.

Otherwise, for the fourth move I'd either go for Curse, Crunch, or Synthesis.

Synthesis

>>27913116
Yeah, Rock Slide is probably better in the long run. Another anon mentioned how those high damage, less accuracy moves were better at taking out tough opponents where a weaker move would only damage, especially without STAB in Torterra's case. Plus it's not like he'll be hitting first with his speed. Crunch might be good to run again, even though I'm planning on using Houndoom as well for dark coverage. Thanks for the advice.

>>27913145
I completely skipped over Synthesis when looking at his moves, and it would be a good recovery option to balance out Woodhammer's recoil. Thanks

Don't bother with Synthesis or any other self-healing move in-game. You can use potions and have an additional move instead.

Ooo, this would be a perfect time for me to ask, what would be good for a lax meganium?

>>27914146
Using some other pokemon that isn't a meganium.

>>27914081
Really? I figured having his own healing move meant I could save potions for other team members and offset Woodhammer's recoil with a healing option that can be recharged at any Pokecenter.

Not OP but what about ingame Rock Polish?
I was thinking of a similar set but replacing one of the moves for the speed boost.

>>27915753
This. Rock Polish is great on Torterra; it's bulky enough to take a (non-Ice) hit in the 1st turn. Just boost up and sweep away.