Ivysaur (Pokémon)/Anime/Major appearances

May's Ivysaur
's Bulbasaur evolved into an Ivysaur sometime after The Right Place and the Right Mime. It further evolved into a Venusaur prior to Pruning a Passel of Pals!.

Shauna's Ivysaur
's Bulbasaur was revealed to have evolved into an Ivysaur in Tag Team Battle Inspiration!.

Other
Multiple Bulbasaur appeared in Bulbasaur's Mysterious Garden. They were seen evolving into Ivysaur, during which Ash's Bulbasaur decided that it was too early for it to evolve.

A Ivysaur appeared in Friends to the End, under the ownership of Assunta. She used it to battle and defeat Ritchie in the Indigo Plateau Conference.

An Ivysaur appeared in Putting the Air Back in Aerodactyl!, under the ownership of. It was used to attack Butch, Cassidy, and their Pokémon as they were trying to steal an on Sayda Island.

An Ivysaur appeared in Judgment Day!, under the ownership of. It was targeted by in one of their schemes, but it was rescued by Jimmy's newly-evolved.