I personally believe its Lugia.
You can only have Pokemon from Hoenn to Jhoto ONLY if you trade them.
JHOTO
You can go to a potion of the Jhoto Region in the Jhoto Safari Zone,after you beat the Elite Four and Champion.You can encounter Jhoto Pokemon in the Jhoto Pokemon.And Oddish aren't in that part of the Safari Zone to annoy you.However....try using HM's on the tree's...
no you can't, im sorry
You can't get to Johto region in Pokemon Diamond/ Pearl, but you start there in Heartgold/ Soulsilver.
'in the norhtern mtns.
14. 8 in the Jhoto region & 8 in the Kanto region
Complete the national Dex with Jhoto region Pokemon wait a few Seconds,Minutes,Hours,days, or weeks then select the three jhoto starter Pokemon
The three Jhoto starters are Chickorita (grass-type), Cyndaquil (fire-type), and Totodile (water-type).
the Pokemon in soul silver are the joto region (how ever u spell it) Pokemon a.k.a cyndaquil, Totodile, and Chikorita
It changes depending upon which region of the world you're in (kanto, hoenn, jhoto, etc.)
Not possible its not found in jhoto region so u cant