Where do you find vigoroth in emerald?

It Is Very Simple,BUT Beware It Is Very Hard To Grow and Lvl it Up.

Phase 1: Petalburg Woods go find a slakoth(the monkey lying on the floor and the color brown with black stripes) it is very rare to find so just wonder through the grass and eventually you will find one

Phase 2:Level it UP until it evolves to a vigoroth(beware that this pokemon will lye arround and wont do any moves after one move, and so on!!

Phase 3:You got Your Vigoroth!!