grass whistle
There are a couple moves such as, sleep powder, grass whistle, sing, yawn, and one other move that I can't think of right now.
sing that's it
Sleep powder is a move that can be learned by most grass type Pokemon sleep powder is not a move taught by a regular move tutor nor is it a TM you can though teach the Pokemon sleep powder if it can learn it from the super move tutor on two island.
There's more put two are yawn and sing.
AnswerWhile a number of TMs in Pokemon Silver take advantage of the Sleep status, only one move actually puts Pokemon to sleep. TM44 - Rest, when used by a Pokemon, will put the user Pokemon to sleep for a number of turns. No TMs available in Pokemon Silver will put your opponent to sleep.
Hypnosis is the best move to put Pokemon to sleep which is a ghost type move. Also Grass whistle which is obviously a grass type move and sing which is a normal type move. Hope this helps!
The Pokemon move called "selfdestruct."
I know throwing a Sleep Seed will put the opponent to sleep (unless it dodges/catches it or something). I believe there's also a Slumber Orb.
By moving clumps of grass in pokemon emerald.
grass knot
Sing Sleep Powder Rest Yawn Leaf Whistle
frenzy plant is the best grass type move, the user hits it opponent with an enormous tree!