Sleep Powder
Type: Grass
Aside from Spore, this attack's the best for putting Pokémon asleep. Also, Sleep Powder usually lasts longer than other sleep moves.
Sleep Powder is learned by:
Bulbasaur (Lv.15)
Butterfree (Lv.15)
Oddish (Lv.18)
Venomoth (Lv.42)
Bellsprout (Lv.15)
Exeggcute (Lv.37)
Tangela (Lv.4)
Hoppip (Lv.17)