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Meganium
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No. 0154 · Generation II · Johto

Meganium

The Herb Pokémon

TL;DR. Meganium is a pure grass-type Pokémon from Generation II. Base Stat Total: 525. The aroma that rises from its petals contains a substance that calms aggressive feelings.

Grass

The aroma that rises from its petals contains a substance that calms aggressive feelings.

Height1.8 m
Weight100.5 kg
AbilitiesOvergrow
HiddenLeaf Guard
Base stats

Stat spread.

Total of 525. Higher peaks mean specialized roles, flat spreads favor versatility.

HP 80
Attack 82
Defense 100
Sp. Attack 83
Sp. Defense 100
Speed 80
Total525
525 base stat total, the 189th-highest of all 1025 Pokémon species and 21st among Grass-types.
100 base Defense, Meganium's strongest stat, ranking 14th of 127 Grass-types.

Rankings computed across all 1025 base-species Pokémon (Mega and Gigantamax forms excluded). Source: National Pokédex base stats.

Pokémon GO

Meganium in Pokémon GO.

Pokémon GO uses its own hand-tuned base stats, distinct from the main-series spread above. At a perfect 15/15/15, Meganium reaches 2,410 CP at level 40 and 2,757 CP as a best buddy.

GO Attack168
GO Defense202
GO Stamina190
Max CP (L40)2,410
Max CP (L50)2,725
Best buddy (L51)2,757
Raid catch CP 1,308–1,377 (L20). Weather boosted 1,635–1,721 (L25).

Run the numbers: CP & HP calculator · PvP IV optimizer · Catch CP calculator

Competitive

Meganium in competitive play.

Recommended builds and battle rankings for Meganium across the current metagames. In Pokémon GO it ranks #323 in the Great League.

Pokémon GO Battle League
Great League #323 81.3 score
Ultra League #236 82.4 score

Build around it: GO PvP IV optimizer · Team builder · Ask Dia

Movesets via Smogon, GO ranks via PvPoke. Updated 2026-06-01.

Quick answers

Common questions about Meganium.

Direct, sourced answers to the most-asked questions about Meganium, each computed straight from its Pokédex data.

What type is Meganium?

Meganium is a pure Grass-type Pokémon. It has a single typing, which means a simpler matchup chart but also fewer resistances.

What is Meganium weak to?

Meganium takes 2× damage from Fire, Ice, Poison, Flying, Bug. It has no 4× weaknesses.

What is Meganium resistant to?

Meganium resists Water, Grass, Electric, Ground. It has no full immunities.

How does Meganium evolve?

Meganium evolves from Bayleef (Level 32). Meganium evolves into Mega Meganium (Mega Evolve with Meganiumite (battle-only)).

What generation is Meganium from?

Meganium was introduced in Generation II (the Johto region). Its Pokédex number is #0154.

What are Meganium's base stats?

Meganium has HP 80, Attack 82, Defense 100, Special Attack 83, Special Defense 100, and Speed 80. Total base stat total: 525.

What are Meganium's abilities?

Meganium can have the ability Overgrow, plus the Hidden Ability Leaf Guard.

Is Meganium legendary or mythical?

No. Meganium is a regular Pokémon, not classified as Legendary or Mythical.

What is Meganium's best stat?

Meganium's highest base stat is Defense at 100, which ranks 14th of 127 Grass-type Pokémon.

Is Meganium good?

Meganium has a base stat total of 525, the 189th-highest of all 1025 Pokémon species and 21st among Grass-types. That is a strong, fully-evolved stat spread.

See the full Q&A page for Meganium →
Alternate forms

This Pokémon has forms.

Sprites · Sound

Through the generations.

Meganium as drawn across two decades of Pokémon games, plus the modern Pokémon HOME render. Hit the cry button to hear it.

Meganium in Gold
Gen II Gold
Meganium in Emerald
Gen III Emerald
Meganium in HeartGold / SoulSilver
Gen IV HeartGold / SoulSilver
Meganium in Black / White
Gen V Black / White
Meganium in X / Y
Gen VI X / Y
Meganium in Ultra Sun / Ultra Moon
Gen VII Ultra Sun / Ultra Moon
Meganium 3D render in Pokémon HOME
HOME Modern 3D render
Type matchups

In battle.

Damage multipliers when Meganium is hit by each attacking type. 4× is two stacked weaknesses, ¼× is two stacked resistances.

2× Weak to
Fire Ice Poison Flying Bug
½× Resists
Water Grass Electric Ground
Comparison

Meganium vs. the average Grass-type.

Each base stat measured against the mean across all 127 Grass-type Pokémon.

Stat Meganium Grass avg Difference
HP 80 66 +14
Attack 82 75 +7
Defense 100 72 +28
Special Attack 83 72 +11
Special Defense 100 72 +28
Speed 80 60 +20
Total 525 417 +108
Ask Dia about Meganium Compare it, check weaknesses, or get a quick competitive verdict.
Game appearances

Meganium appears in 25 games.

Every mainline release where Meganium is obtainable, has a dex entry, or is transferable. Grouped by generation.

Gen II
  • 2000 Gold
  • 2000 Silver
  • 2001 Crystal
Gen III
  • 2003 Ruby
  • 2003 Sapphire
  • 2004 FireRed
  • 2004 LeafGreen
  • 2005 Emerald
Gen IV
  • 2007 Diamond
  • 2007 Pearl
  • 2009 Platinum
  • 2010 HeartGold
  • 2010 SoulSilver
Gen V
  • 2011 Black
  • 2011 White
  • 2012 Black 2
  • 2012 White 2
Gen VI
  • 2013 X
  • 2013 Y
  • 2014 Alpha Sapphire
  • 2014 Omega Ruby
Gen IX
  • 2023 Indigo Disk DLC
  • 2025 Legends: Z-A
  • 2026 Pokémon Champions
Side games + live service
  • 2016 Pokémon GO
Pokémon Champions: Champions availability TBD . Full roster pending official reveal.
Where to find

Meganium isn't found in the wild.

No main-series wild encounters recorded. Meganium is obtained through evolution, breeding, trade, or a special event or static encounter.

Pokémon anime

Meganium appears in 9 episodes.

From EP261 (2002-08-01) through JN116 (2022-07-08).

Pokémon Masters EX · Sync Pairs

Meganium partners with 1 trainer in Masters EX.

Each card is a canon Trainer + Meganium partnership. Tap any pair to open the Sync Pair catalog and explore the full roster.

Pokémon Sleep · Dozing type

Meganium has 4 sleep styles.

Catch each pose by sleeping near Snorlax with enough Drowsy Power. Meganium sleeps as a Dozing type.

TCG Pocket appearances

1 Meganium card across TCG Pocket.

Every printed variant on iOS / Android. Tap any card for full art.