No, whatever myth you heard of Groudon evolving is false. Groudon does not evolve at any time.
No, Groudon does not evolve in Pokémon Ruby.
Groudon does not evolve, therefore no stone will make Groudon evolve.
Sweetheat, Groudon does not evolve o: --Taylor
...sigh. groudon is a legendary, it does NOT evolve
Groudon is a legendary, and therefore does not evolve.
Groudon doesn't evolve... Sorry
groudon doesnt evolve!
No
Groudon is a legendary Pokemon and so far none of the legendary Pokemon can evolve. (That would be cool if it could but it can't)
They primal evolve when sent out in battle holding either a blue orb for kyogre or red orb for groudon
it doesn't its a legendary Pokemon
For one it is Groudon and (listen up here) HE IS A LEGENDARY HE WILL NOT EVOLVE!