Pokémon-specific weakness guide
Meganium Weaknesses and Counters
This guide explains Meganium's defensive profile, including every weakness, resistance, immunity, and practical counter type based on its Grass typing.

Meganium
#0154
Resistances (4)
Immunities (0)
Battle notes
- Meganium's Grass typing is best attacked with Fire (2x), Ice (2x), Poison (2x). Start with those attacking types when choosing moves or counter Pokémon.
- Avoid relying on common Water, Electric, Grass attacks unless they have unusually high power or a secondary purpose, because Meganium resists or ignores those matchups.
- This guide uses the modern Gen 6+ type chart only. Abilities, held items, Terastallization, weather, fields, and special move rules can still change real battle outcomes.
Best counter types
These attacking types hit the defender for super-effective damage under the modern Gen 6+ type chart.
Example Pokémon with Effective Types
These are examples of Pokémon associated with super-effective attacking types, not a ranked competitive counter list.
Defensive typing summary
Meganium's base defensive typing is Grass. The weakness chart multiplies both types when a Pokémon has two types, so a matchup can become 4x, 2x, 1x, 0.5x, 0.25x, or 0x.
Related guides
FAQ
What is Meganium weak to?
Meganium is weak to Fire (2x), Ice (2x), Poison (2x), Flying (2x), Bug (2x).
Which attacking types are most practical against Meganium?
Fire, Ice, Poison, Flying, and Bug are tied as the strongest attacking types against Meganium, each dealing 2x damage.
Does Meganium's ability change these weaknesses?
This page uses base defensive typing only. Abilities, held items, Terastallization, weather, fields, and special move rules can change actual battle outcomes.