Oddish cannot learn a "Leaf" move; you are probably referring to the type "Grass". If you are, you can look at the list below. This information is only accurate to Generation V.
By leveling up, Oddish learns the following Grass type moves:
Absorb at Level 1
Stun Spore at Level 15
Sleep Powder at Level 17
Mega Drain at Level 21
Giga Drainat Level 37
Petal Dance at Level 41
Regardless of level, Oddish learns the following Grass type moves by TM Learning:
TM22, SolarBeam
TM53, Energy Ball
TM86, Grass Knot
Also regardless of level, Oddish learns the following Grass type moves as Egg Moves:
Ingrain
Father: Tangela, Tangrowth, Sunkern, Sunflora, Roselia, Roserade, Cacnea, Cacturne, Carnivine, Snover, Abomasnow, Maractus, Foongus, Amoonguss, Ferroseed, and Ferrothorn.
Razor Leaf
Father: Bulbasaur, Ivysaur, Venusaur, Bellsprout, Weepinbell, Victreebel, Chikorita, Bayleef, Meganium, Sunkern, Sunflora, Nuzleaf, Shiftry, Tropius, Turtwig, Grotle, Torterra, Snover, Abomasnow, Cottonee, and Whimsicott.
Synthesis
Father: Bulbasaur, Ivysaur, Venusaur, Chikorita, Bayleef, Meganium, Hoppip, Skiploom, Jumpluff, Sunkern, Sunflora, Seedot, Nuzleaf, Shiftry, Roselia, Roserade, Tropius, Turtwig, Grotle, Torterra, Maractus, Foongus, and Amoonguss
Oddish evolves into Gloom with a leaf stone, or at level 21 Gloom evolves: Into Vileplume, using a leaf stone on Gloom. Into Bellosom, using a sun stone on Gloom. ^_^
Oddish learns Sweet Scent at Level 7 in Pokémon Ruby.
You need to catch an oddish or a gloom and then make oddish evolve into gloom at lv.21 then use a leaf stone on it. Hope I helped
Go to the city with the Bug Gym (Castelia City). Then go to the 1st pier and talk to the guy at the end. If you say you got Pansage as the elemental monkey he will give you a Leaf Stone. Remember that it will take longer for your pokemon to learn a new move if it is evolved with a stone. Your monkey, though, will not learn anymore moves after it evolves.
In SoulSilver he gives you a Leaf Stone if you show him an Oddish :) Hope that helped-- Taylor
Yes, Oddish can learn flash.
you use a leaf stone on GLOOM, the evolved form of oddish.
Meganium Does not learn the move Leaf Storm.
no
Oddish evolves at level 21 + it evolves into vileplume once you give it a Leaf stone.
No Oddish cannot learn Rock Smash.
Oddish evolves into Gloom with a leaf stone, or at level 21 Gloom evolves: Into Vileplume, using a leaf stone on Gloom. Into Bellosom, using a sun stone on Gloom. ^_^
YES
razor leaf
oddish
no level you have to use a leaf stone
Oddish, Vileplume, Gloom, or Lotad