The radio tower in Goldenrod City.
Goldenrod city's Whitney (normal type)
Get the Squirtbottle from a lady in the town where Whitney is after beating her, and squirt the tree.
you should use a fighting type like machamp
After you beat Whitney go to the flower shop and talk to the lady and she will give you a squirt bottle.
Whitney uses Clefairy and Miltank in Pokémon Gold/Silver/Crystal/HeartGold/SoulSilver and in the anime she has a Nidorina, a Clefairy and a Miltank.
Talk to the person behind the counter in the radio tower and answer the questions. You get a radio card thing for your pokegear and then Whitney leaves.
There r 8,Falkner,Bugsy,Whitney,Morty and etc
Talk to Whitney after you beat her. She'll be crying, so you leave and come back in a few minutes.
On Pokemon Soul Silver and Pokemon Heart Gold, you have to defeat the Goldenrod City Gym Leader, Whitney, and then she tells you that the construction for the Pokeathlon Dome is complete.
Whitney is in Goldenrod City.
You can either trade an onix holding a metal coat or wait until Whitney calls you after a rematch between you and her
Whitney in Goldenrod, correct? You have to go to the radio tower. Whitney is getting the radio card from the front desk. Talk to her and she should return to her Gym.