When Shroomish reaches level 23, it will evolve into a Breloom... If you can beat the Pokemon League repeatedly, then give your Shroomish an Exp Share and make your strongest Pokemon beat the League... This way, any low level Pokemon with Exp Share will surely level up really fast...
Shroomish > lvl 23 > Breloom
Breloom
Shroomish > lvl 23 > Breloom
Breloom!
In Pokémon Emerald, Shroomish will evolve into Breloom at Level 23.
I know Shroomish evolve at level 23 Brelum are great Pokemon (Try to evolve one see what happens!)
Shroomish evolves into Breloom, starting at level 23.
Breloom is the last evolution. It does not evolve further.
Breloom does not evolve, but it is the evolved form of Shroomish.
Shroomish evolves into Breloom at level 23. There currently seems to be no plans on if Breloom will have a further evolution. Or if Shroomish will evolve into something else.
Lv 50 but if i were you i wouldn't make shroomish evolve till Lv 90 so you have the perfect Pokemon catcher, this i read about on a hints website and since then I completed the ruby version in two days after evolving shroomish as above
it evolves at level 23