By trading and mixing records with other gamers, going to Nintendo Events and getting Pokemon there, and by hunting down ones which are findable in game.
You have to complete the Hoenn pokedex to get one from Prof. Birch. That includes catching all the Pokemon in there. This is impossible, but you can get a Johto starter if you finish your Hoenn pokedex and show it to professor Birch.
To complete hoenn pokedex you do not need JIRACHI & DEOXYS at all.you can't get all Pokemon on Pokemon emerald so TRADE or CHEAT !!
Catch trade n evolve Pokemon.
Yes, you need to complete the Johto Pokedex to get the Hoenn Sound device, which allows you to catch Hoenn pokemon in the wild.
you have to complete the hoenn pokedex and then i think you get to chose 1
you can't get to hoenn until you complete the pokedex
yes,it is the hoenn pokedex you can get only in ruby,sapphire and emerald.
I think you have to trade to see them. Actually, you have to trade to see lots of things in Hoenn. But it'd be worth it; you get a Johto starter for completing the Hoenn Dex.
You have to have caught all of the Pokemon (not just see them) to complete the Pokedex to show to Gamefreak, or have it during a trade
you can get it after you complete the hoenn pokedex go to prof birch and he will let have one
my pokedex said that there are only 139 Pokemon in the hoen pokedex.
You have to go into tall grasses, caves, water, and swampy grasses to find Pokemon. If you capture the Pokemon, they'll automaticly add to your Pokedex. If you complete the Pokedex and you got to Prof. Birch, Prof. Oak or whoever, then you can get a prize.