Tsubomi

Ash and his friends saw a flyer advertising her Poffin classes and paid a visit to Forsythia's home in Oh Do You Know The Poffin Plan!. While Dawn and Brock had no trouble making theirs, Ash struggled and ended up burning them. During the test tasting, Dawn's Poffins, despite being based on her mother's recipe, left a bad taste in her Pokémon's mouths. Forsythia then went on to explain that all Pokémon have different tastes just like people do.

Ash was curious about Forsythia's Roserade being so shy, and she told the story of how she met and befriended it by giving it her red scarf. The story was interrupted when Team Rocket crashed through her garden in a tank, stealing all of her Berries. Roserade sprung into action to defend the orchard, wrapping its signature scarf around its face. Team Rocket then found out from Lotad that, without the scarf, Roserade didn't have the confidence to fight, so Meowth and Mime Jr. removed it.

They were about to run off with Roserade and the Berries, but Forsythia jumped in front of the tank and told Roserade that it didn't need the scarf to believe in itself. With that, Roserade escaped and used a beautiful Petal Dance attack against Team Rocket. After they were gone, Roserade's Sunny Day combined with Lotad's Water Gun made Forsythia's garden begin to regrow. Later, Dawn was finally able to make Poffins that her Pokémon liked, and thanked Forsythia for all of her help.

Forsythia also made a brief cameo in Unlocking the Red Chain of Events! along with her Pokémon.

(Source: Bulbapedia)