#0154 · Johto · Generation 2 · starter

Meganium

Herb Pokémon · Grass-type

Meganium is a Grass-type Pokémon, the Herb Pokémon, number 154 (#0154) in the National Pokédex. It was introduced in Generation 2 and comes from the Johto region. It is 1.8 m tall and weighs 100.5 kg.

Meganium is the Herb Pokémon, a calm Grass type whose neck flower soothes tempers and whose breath, the Pokédex says, can bring dead plants back to life. In Legends: Z-A it gained a Mega Evolution.

How to pronounce Meganium

Meganium is pronounced meh-GAY-nee-um. The capital letters show the stressed syllable.

Listen to Meganium said out loud:

In Japanese it is メガニウム.

Hear every other name on the Pokémon pronunciation guide.

Lore

Biology

Meganium is a large, pale green quadruped with a long neck, yellow eyes and stamen-like feelers that are longer on males. A big pink six-petalled flower circles its neck. It is 1.8 m tall and weighs 100.5 kg. The Pokédex says anyone standing beside it feels as refreshed as in a sunny forest.

Behaviour

Meganium is very docile. The Pokédex says the scent of its flower soothes emotions, and that in battle it releases extra scent to take the fight out of its foe. Bulbapedia adds that Pokémon sleep peacefully beside it.

Habitat

The Pokédex habitat is grassland, though Bulbapedia calls it rare in the wild. In Scarlet and Violet it comes from evolving Bayleef in The Indigo Disk, and in Legends: Z-A from evolving Bayleef or from the 4★ Grass-type wild zones of the Mega Dimension DLC's Hyperspace Lumiose.

Powers

Meganium knows Petal Dance, Petal Blizzard, Razor Leaf, Giga Drain and Solar Beam. Its Abilities are Overgrow and the hidden Leaf Guard. Mega Meganium, made with Meganiumite, is Grass and Fairy with the Ability Mega Sol, which lets it use moves as if the sun were harsh. It fires Solar Beams from four flowers and its base Special Attack jumps from 83 to 143. Meganium itself is a bulky supporter with 100 base Defense and Special Defense.

Name origin

Meganium may combine the prefix mega- with geranium, a flowering plant. The Japanese name is Meganium (メガニウム), spelled the same as the English one and possibly built the same way.

Design inspiration

Bulbapedia says Meganium looks like a sauropod, especially Apatosaurus, with a flower based on a hybrid daylily and a neck that recalls the titan arum. Its proportions and face resemble a Galápagos tortoise, whose shell opens at the front the way the flower does. Mega Meganium's layered flowers resemble a ruff and jabot, and its foliage may recall bloomers. These are fan readings.

Evolution notes

Meganium evolves from Bayleef at level 32 and is the last stage of the Chikorita line.

In the games

Meganium is the final form of Johto's Grass starter line, introduced in Gold and Silver. In New Pokémon Snap it counts among the Illumina Pokémon, which are credited with saving the Lental region from a meteorite 2,000 years ago, and it sits at the Florio Island Illumina Spot. Mega Meganium debuted in Legends: Z-A.

In the anime

Vincent's Meganium debuted in 'The Legend of Thunder!'. In 'Odd Pokémon Out!', a Nurse Joy's Meganium becomes the crush of Ash's Grovyle and of a wild Tropius, though it only returns the Tropius's feelings.

Fun facts

• Among Pokémon introduced in Generation II, Meganium is both the heaviest and the tallest Grass type.
• The Chikorita line is the only starter line to keep its Japanese voices in the anime's English dub, which Bulbapedia puts down to their near-identical English and Japanese names; Meganium's is even spelled exactly like its Japanese romanisation.
• Its Legends: Z-A Pokédex entry also calls that Solar Beam the Mega Sol Cannon.

Sources: Bulbapedia: Meganium (Pokémon) · Serebii: Meganium (Scarlet/Violet Pokédex)

Base stats

• HP: 80
• Attack: 82
• Defense: 100
• Sp. Atk: 83
• Sp. Def: 100
• Speed: 80

Meganium’s base stat total is 525. Its highest stat is Defense and Sp. Def.

Type matchups

What is Meganium weak to?

Meganium takes extra damage from Fire (2×), Ice (2×), Poison (2×), Flying (2×), Bug (2×) moves.

It resists Water (½×), Electric (½×), Grass (½×), Ground (½×).

Evolution

What does Meganium evolve from?

Meganium evolves from Bayleef at level 32.

Meganium is the final stage of its evolution family.

The whole family: Chikorita, Bayleef, Meganium.

• Chikorita evolves into Bayleef at level 16.

Forms

• Mega Meganium (Mega): Grass/Fairy-type, base stat total 625 (HP 80, Attack 92, Defense 115, Sp. Atk 143, Sp. Def 115, Speed 80). Ability: Mega Sol.

Abilities

• Overgrow: Strengthens Grass moves to inflict 1.5× damage at 1/3 max HP or less.
• Leaf Guard (hidden ability): Protects against major status ailments during strong sunlight.

Moves

Moves Meganium learns by level up in Scarlet / Violet

“Evo” means Meganium learns the move the moment it evolves: Petal Dance.

TM moves (47)

Meganium can learn 47 moves from TMs in Scarlet / Violet: Take Down, Charm, Fake Tears, Mud-Slap, Protect, Trailblaze, Facade, Bulldoze, Magical Leaf, Dragon Tail, Endure, Sunny Day, Bullet Seed, Zen Headbutt, Body Slam, Sleep Talk, Seed Bomb, Reflect, Light Screen, Grass Knot, Stomping Tantrum, Rest, Swords Dance, Body Press, Substitute, Giga Drain, Energy Ball, Encore, Helping Hand, Grassy Terrain, Grass Pledge, Earthquake, Giga Impact, Frenzy Plant, Outrage, Leaf Storm, Hyper Beam, Solar Beam, Tera Blast, Knock Off, Solar Blade, Weather Ball, Grassy Glide, Double-Edge, Endeavor, Petal Blizzard, Curse.

Egg moves (6):Ancient Power, Counter, Flail, Heal Pulse, Ingrain, Vine Whip.

Breeding & training

• Gender: 87.5% male, 12.5% female.
• Egg groups: Monster, Grass.
• Egg cycles: 20 (steps to hatch, Scarlet/Violet: 2,560).
• Catch rate: 45 out of 255.
• Base friendship (Gen 8 onward): 50.
• Growth rate: Medium Slow (1,059,860 experience points to reach level 100).
• Defeating it gives 1 Defense and 2 Sp. Def effort values.
• Base experience yield: 236.

Pokédex entries

The fragrance of Meganium's flower soothes and calms emotions. In battle, this Pokémon gives off more of its becalming scent to blunt the foe's fighting spirit. (Ruby, Sapphire, Omega Ruby, Alpha Sapphire)

Meganium's breath has the power to revive dead grass and plants. It can make them healthy again. (Silver, FireRed, SoulSilver, Y)

The aroma that rises from its petals contains a substance that calms aggressive feelings. (Gold, LeafGreen, HeartGold, X)

Its breath has the fantastic ability to revive dead plants and flowers. (Diamond, Pearl, Platinum, Black, White, Black 2, White 2)

The fragrance of a Meganium's flower soothes and calms emotions. In battle, it gives off more of its becalming scent to blunt the foe's fighting spirit. (Emerald)

Anyone who stands beside it becomes refreshed, just as if they were relaxing in a sunny forest. (Crystal)

Names around the world

Trivia

• Heaviest Grass type in Gen 2: 100.5 kg.
• Tallest Grass type in Gen 2: 1.8 m.
• Highest Defense among Grass types in Gen 2: 100, shared with 1 other.
• Highest Sp. Def among Grass types in Gen 2: 100, shared with 2 others.
• Taller than 82% of all Pokémon (1.8 m).
• Heavier than 83% of all Pokémon (100.5 kg).
• Base stat total 525, ranked #189 of 1,025.
• One of 127 Grass-type Pokémon (counting dual types).
• One of 130 green Pokémon.
• Number 3 of 100 Pokémon introduced in Generation 2 (Johto).
• Part of an evolution family of 3 Pokémon.
• Can learn 62 different moves in Scarlet / Violet.
• Catch rate 45: about 5.9% per Poké Ball at full health.
• Has 1 alternate form.
• Appears in 6 distinct Pokédex entries.

Sources and fact-checking

• Stats, types, abilities, moves, evolutions, forms and Pokédex entries: PokéAPI open game data.
• Lore: written by pokee.si in our own words, researched from Bulbapedia: Meganium (Pokémon), Serebii: Meganium (Scarlet/Violet Pokédex).
• Pronunciation (meh-GAY-nee-um): it follows how the English anime, games or official videos say it.

Last checked: 19 October 2026. Every sentence of the lore was checked against Bulbapedia, Serebii and the game data.

Explore

Grass-type Pokémon · Meganium vs Typhlosion · Meganium vs Feraligatr · Meganium vs Venusaur · Johto region guide · Overgrow ability · Leaf Guard ability · Compare Meganium · Full Pokédex · Type chart · All moves

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Gen 2 Grass-type Pokémon · Gen 2 Pokémon list · Green Pokémon list · Monster egg group · Grass egg group · Pokémon that start with M · Turtle Pokémon · Dinosaur Pokémon

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