You have to beat Erika, who is the fourth Gym Leader, raises Grass-Type Pokemon, and resides in Celadon City.
I believe that is after you've beaten the 4th Gym in Volcanoridge Town.
ieryjioet
you use strength. you get strength on route 42. you can use it in the wild after you beat the goldenrod city gym.
By defeating the the fourth gym leader
It's the gym leader that allows you to use strength after you beat him.
i am pretty sure it's strength.
in pearl, diamond, and platinum the 6th gym
beat the forth gym leader
In Emerald you have to beat Flannery in Lavaridge But to get Strength you have to smash the rocks in the tunnel between Rustboro and Verdanturf. Good Luck!
You have to beat Erika, who is the fourth Gym Leader, raises Grass-Type Pokemon, and resides in Celadon City.
byrons gym at canalave city. You have to use surf at route 218(west of Jubilife City) and then you can get in canalave city.
After you beat the sixth gym leader, you are allowed to use strength which moves the boulders.
I believe that is after you've beaten the 4th Gym in Volcanoridge Town.
First if you mean strength you must beat the gym leader in pastoria city and she will give the HM strength. Then you teach to a Pokemon and you can use it. If you mean stealth rock you can teach it to a Pokemon if you have the TM for it or sometimes your Pokemon will learn it. I hope this is helpful
after you beat the gym leader that tells you you can use the hm move go to the house right next to it and there (i hope i was of any help)
on diamond u should go to eterna and go use strength on the boulder! then go north to face the snowpoint gym