Treecko in Pokémon GO
By Matt · Updated Quick answer
Treecko is Grass type, so it's weak to Bug, Fire, Flying, Ice and Poison.
What is Treecko weak to?
Treecko is Grass type, so it takes extra damage from Bug, Fire, Flying, Ice and Poison attacks.
Defending Treecko 
Grass
Grass Hits it hard
-
Bug160% damage 1.6× -
Fire160% damage 1.6× -
Flying160% damage 1.6× -
Ice160% damage 1.6× -
Poison160% damage 1.6×
Bounces off
-
Electric62.5% damage - Grass62.5% damage
-
Ground62.5% damage -
Water62.5% damage
Leave Electric, Grass, Ground and Water attackers at home: Treecko resists them.
Matt's guides and news about Treecko
FAQ
What is Treecko weak to in Pokémon GO?
Treecko is Grass type. It's weak to Bug, Fire, Flying, Ice and Poison. It resists Electric, Grass, Ground and Water.
Hundo CPs come from Matt's guides and are checked against PokemonGO Hub. See every live hundo on Hundos right now, or browse all Pokémon.
Get Matt's full take
What to raid each week, with Matt's commentary, is on Patreon. Supporting the content gets you a spot on Matt's friends list.