Natane

Gardenia ( Natane in original Japanese language versions), is the Gym Leader of Eterna City, and battles using Grass-type Pokémon. In Gardenia's gym, the player has to find the four girls hidden around the gym and battle them before Gardenia shows herself. Her Pokémon are Cherubi (Lv. 19), Turtwig (Lv. 19), and Roserade (Lv. 22). When defeated, she awards the Forest Badge to the victor. In the anime episode "The Grass Type is Always Greener" she wants to trade a Vileplume, Victreebel or Bellossom in exchange for James' Carnivine, however, these three Pokémon were not shown in any of the anime episodes.

However, when she later noticed that James' Cacnea wasn't being trained to its full potential, he agreed to let her care for it and train it to become stronger, after a bit of unsuccessful training on his part. She later appears after the game's end in front of the Old Chateau, inspecting odd activity there (presumably caused by Rotom) but is too scared to go inside and leaves it up to the player. In the anime, she has a extremely strong liking for Grass-type Pokémon, hugging almost every one of them in sight (except her own). She also becomes friends with Cheryl when they meet in Eterna Forest.

In the episode "Once there were Greenlands", Gardenia ask James for his Cacnea to train it and teach it Drainpunch. from wikipedia