You can't because leafgreen is a gameboy game when soulsilver is a ds game and since gameboy games need a wire thingy you can't.
By Pokemon Master: my real name is Jeonghoon Kim
P.S I'm korean.
Yes you can trade leafgreen version Pokemon to another leafgreen version.
no, you can't trade Pokemon from gold to leafgreen. But you can trade them from Pokemon XD from gamecube.
Any pokemon from Sapphire, Ruby, and LeafGreen
Sorry, but you can't. You can trade from LeafGreen to Pearl, but not back.
No you don't
Bellsprout has to be found wild, in leafgreen, you need to trade from Leafgreen for Pokemon.
HelloSorry to say but you cant trade Pokemon from pearl to leafgreen but you can migrate Pokemon from leafgreen to pearl via the pal park
You'll need to trade from Pokemon HeartGold, Diamond, Pearl, or Platinum.
yes you can trade pokemon leafgreen pokemon to pokemon emerald version same as pokemon fire.
Pokemon Emerald: Birth Island Pokemon Sapphire: Trade from Pokemon FireRed, LeafGreen, or Emerald. Pokemon Ruby: Trade from Pokemon FireRed, LeafGreen, or Emerald.
You can trade it to a friend.
TRADE FROM EMERALD