You can't.
You have to trade it from Ruby, Sapphire, Emerald, or Fire Red.
yes
Oddish evolves into Gloom at level 21. After that, you can evolve it into Bellossom by using a sun stone or Vilepume by a leafstone.
Oddish will evolve at Level 21.
Pinsir doesn't evolve at all.
Paras will evolve into Parasect.
my oddish evolved at level 21 maybe around the 20s
you can't catch it. evolve it from the Pokemon after oddish with a leaf Stone
In SoulSilver, Oddish will evolve into Gloom at Level 21 however Gloom can evolve 2 different ways, you can use a Leaf Stone on it in order for it to evolve into Vileplume or you can use a Sun Stone on it in order for it to evolve into Bellossom.
no where ok
in the Ilex Forest
Oddish evolves at level 21 + it evolves into vileplume once you give it a Leaf stone.
oddish
Oddish evolves into Gloom in Pokémon Ruby.
No oddish evolves into Gloom or Bloom whatever that drooly Pokemon is.
Oddish evolves at level 21 in HeartGold.
Oddish evolves into Gloom at level 21.
In the Ilex Forest at night.