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defeat all the other gym leaders
Professor Elm will give it to you after you defeat the 8 gym leaders of Johto.
you defeat one of the gym leaders and then go to the flower shop and a girl will give it to you
Well after you defeat 15 gym leaders in Pokemon HeartGold / SoulSilver go to Cinnabar Island and talk to Blue.
there is no 16th gym in soulsilver u dope....
defeat all 7 gym leaders in kanto then the old man will move
Blue can be found at Cinnabar Island. You have to defeat the other 7 Kanto gym leaders before you are able to battle him.
Go to serebii.net and click on heartgold/soulsilver. click on gym leaders.
no.
defeat gym leader.
defeat the fifteenth gym leader
Talk to everyone in the room and get a special HM. Then you travel west and defete both gym leaders in that area.