From Bulbapedia, the community-driven Pokémon encyclopedia.
Salveyo weed (Japanese: アシレ水草 Ashire water herb) is a weed that only grows on clear lake bottoms. Poliwag are known to eat this weed. Misty used it to cure Ash and Tracey of a Vileplume's Stun Spore in The Stun Spore Detour, with the help of a friendly Poliwag.
Meanwhile, Jessie had also been a victim of Stun Spore, and James and Meowth also tried to locate the Salveyo weed to help cure her. They tried to steal it from Misty using a variety of techniques, including battling, trying to lure her with dresses, perfume and food, and even dressing up as a woman and her child. In the end, Misty just gave the weed to them since she realized all they wanted was to make Jessie better.
- Salve yo means Save me in Spanish.
- Some Pokémon websites incorrectly refer to it as Sangora weed.