!!THIS IS THE REAL ANSWER!! YOU HAVE TO WATER IT!!
I HOPED THIS HELPS U OUT!!
Obtain the "squirtbottle" from a woman in a house full of flowers in goldenrod city (northish part of town) after defeating the goldenrod gym leader. After this, use the quirt bottle on the wiggly pokemon.
yea but youre trying to get to golden rod city and the bottle is in the place that your trying to get to
you get the squirtbottle at the flower shop and water the tree(which is Sudowoodo)
You'll need the HM Whirlpool and teach it to one of your Pokemon and you can pass the Whirlpools blocking Whirlpool Cave.
you need all of the gym bades
if you mean in Pokemon diamond/pearl/platinum you need to get the national dex!
You first have to beat the Elite Four for the first time and then you have to get all of the Kanto Badges and he'll let you pass
get the national pokedex
you can't
beat the goldenrod gym then go to the flower shop in goldenrod and she'll give you the squirt bottle
No you cant
He is the sleeping pokemon blocking the entrance to cycling road and past vermillion city
Complete the pokedex.
you use it to get past the man blocking your way in the whirl islands