There are Bellsprout, Lickitung, Tangela, and Weepinbell.
go to the grass area on route 25 ,the one were you have to cut your way to
safari zone swamp area or suburban area pokewalker route
well you can find Vulpix on Route 36, 37 ,and 48 in Johto and in Kanto you can find it on Route 7 and 8Vulpix is found on route 37,36,48 only in Soulsilver, you might find them, they are uncommon.Another Faster Way Is To: Fly/Go To The Safari and just go to the tall grass outside of the safari entrance gate. they are very common in that little grass area.
Route 34 when on the radio they say that there is a large number of ralts in that area
you have to catch one on Route 44 or catch it in the Safari Zone (Mountain Area)
It is exactly where you described it. It's on route 9. If you mean specifically how to get the Pokemon, you need to go into a grassy area, cave, or other place where wild Pokemon appear on that route to find the swarm Pokemon.
safari zone (desert area: if forest objects are placed, may appear in tall grass)
dunno about heartgold, but in soulsilver it is in that area of grass under the day care and you have to headbutt to get him too.
He's on Route 30, after Cherrygrove City. You'll have walk though a very grassy area (turn right instead of using the main road) to get there.
You can find lickitung in both games at Route44 and in the safari zone (mountian area).On route 44. Use surf to go across the water to the middle, where there's grass. I haven't had much luck, though I've seen lickitung there.
you have to travel for along the grass area
there is small area of grass where you can often find lickitung,it on the route to the ice cave from mahogany town. you have to surf to this area