in the Ilex Forest
no where ok
In the Ilex Forest at night.
yes
you can't catch it. evolve it from the Pokemon after oddish with a leaf Stone
my oddish evolved at level 21 maybe around the 20s
1st Pokemon is lickitung then oddish then should be staryu then growlithe then pichu
you give him and Oddish in soulsilver he wants you to show him a lickitung
5 Pokemon to get in the beginning of the game: Mareep Pidgey Bellsprout/Oddish Aipom And then your Cyndaquil.
Oddish can be caught in Routes 5, 6, 24, 25, Ilex Forest, and the Safari Zone (Night).
In SoulSilver he gives you a Leaf Stone if you show him an Oddish :) Hope that helped-- Taylor
Generally, Oddish is found in Ilex Forest and the Safari Zone. Commonest in Ilex at night, though since I have SoulSilver it could be different for you. If not, a simple visit to the GTS in Goldenrod works just as well!
Oddish is the dual Grass/Poison-type Pokemon.