How Does Oddish Evolve Into Gloom And Vileplume?

I still smile thinking about catching my first Oddish in the tall grass and watching it sprout into Gloom at level 21 — that part is automatic. From there, evolution into Vileplume requires a Leaf Stone: just use the Leaf Stone on Gloom and it immediately evolves. If you’re indecisive, remember there’s another branch too — a Sun Stone on Gloom makes Bellossom instead, so choose the stone based on whether you want poison-flower vibes or a sunny, grassier partner.

A small tip from my runs: if Gloom is about to learn a move you like, delay using the Leaf Stone until after it learns it, because evolution via stone happens instantly and sometimes changes the timing of move learning. Also, Leaf Stones and Sun Stones appear in different spots depending on which game you’re playing, so keep an eye out in shops, hidden items, or as rewards — and that little planning step saved me from losing a perfect moveset more than once.

If you've ever raised an Oddish and wondered what comes next, here’s the straightforward lifecycle and a few things I’ve learned the hard way while farming Leaf Stones in-game. Oddish evolves into Gloom when it reaches level 21 — that’s unconditional, just hit the level and poof, it becomes Gloom. From there, Gloom has two branching evolutions: use a Leaf Stone on Gloom to get Vileplume, or use a Sun Stone to evolve Gloom into Bellossom. The Leaf Stone route is the classic one people think of when picturing that giant, Rafflesia-like flower from the pokédex pages.

I usually hang onto a Gloom for a little while before using a Leaf Stone because Gloom learns some neat moves at higher levels (things like stronger draining moves or status moves), and some of those moves don’t carry over if you stone-evolve too early — so patience can pay off. Also, evolution by stone is instant and doesn’t require any extra level, so you can evolve Gloom the moment you get a Leaf Stone if you want Vileplume right away. Leaf Stones turn up in different places depending on the game: sometimes in caves, sometimes sold in shops, and sometimes as hidden items in routes. In older games like 'Pokémon Red' or later ones like 'Pokémon Sword', the mechanics are the same, even if the locations differ.

If you like playing with team composition, Vileplume brings solid special defense and some nasty status options with moves like Sleep Powder and Sludge Bomb, while Bellossom tends to lean more into sunny weather synergies and special attack. Personally, I split my playthroughs: one save where Gloom becomes Vileplume for the classic look and poison coverage, and another where I try Bellossom for a sun-team run. Either way, the key facts are simple: Oddish → Gloom at level 21; Gloom + Leaf Stone → Vileplume (or Gloom + Sun Stone → Bellossom). Try waiting for the move you want, and then stone it — it keeps things fun and efficient for battle and breeding alike.