Grass-type weakness
Grass-type defenders take ×1.6 from Fire, Ice, Poison, Flying, Bug — those are the moves you bring when a Grass raid boss or Grass-type gym defender is in front of you. Below is the full chart of what hits Grass hard, what resists Grass, the inverse (where Grass attacks shine and where they fall flat), dual-type matchups for the most common Grass-pair defenders in the game, and the top 5 attackers per super-effective type pulled from the live tier list.
Single-type Grass defenders take ×1.6 from any move of the listed weak-to types. Dual-type Grass defenders stack multiplicatively — a second weakness from their partner type can push the multiplier all the way to ×2.56. Resisted attacks deal only ×0.625, and doubly resisted attacks (a stack of two ×0.625) drop damage to roughly ×0.39 — never bring those into a Grass fight.
Use Grass attackers when the boss in front of you is one of the listed types. Stack STAB (×1.2) on top by picking a Grass-type mons that knows a Grass fast and Grass charged move. The combined multiplier is ×1.92 before weather.
Avoid Grass attackers when the defender is one of the listed types. Resisted damage cuts your DPS by 37.5%; doubly-resisted damage cuts it by 61%. In raids this is the difference between a 3-account clear and a relobby.
Most Grass-type bosses in the game are dual-type. Combined effectiveness multiplies through both types, so a Grass/X defender may be ×2.56 weak to a single attacker type, or fully neutral if the partner type cancels the Grass weakness. Pick the attacker type that maxes the multiplier.
| Dual-type | Examples | Top weakness | Mult |
|---|---|---|---|
| Grass / Poison | Venusaur, Roserade, Amoonguss | Fire | ×1.60 |
| Grass / Flying | Tropius, Decidueye | Ice | ×2.56 |
| Grass / Fairy | Whimsicott, Tsareena | Poison | ×2.56 |
| Grass / Steel | Ferrothorn, Kartana | Fire | ×2.56 |
| Grass / Fighting | Breloom, Virizion, Chesnaught | Flying | ×2.56 |
| Grass / Dark | Shiftry | Bug | ×2.56 |
| Grass / Psychic | Exeggutor, Celebi | Bug | ×2.56 |
| Grass / Ice | Abomasnow | Fire | ×2.56 |
Leagues: Great / Ultra.
Tapu Bulu, Roserade, Venusaur (CD), Trevenant — Grass is heavy in Great + Ultra ladder.
Knowing the Grass weakness chart matters as much in PvP as in raids — a Grass lead into one of the listed weak-to types loses the matchup before shields even come into play. Always check the dual-typing of the opposing lead: a single Grass mons is harder to counter than a Grass/Y where Y stacks a second weakness.
›What is Grass-type weak to in the game?
Grass-type defenders take ×1.6 damage from Fire, Ice, Poison, Flying, Bug attacks. Bring an attacker of one of those types to break a Grass raid boss or gym defender fastest.
›What resists Grass-type attacks?
Grass attacks are resisted by Fire, Grass, Poison, Flying, Bug, Dragon, Steel (×0.625 damage). Avoid sending Grass attackers into those defenders.
›What is super-effective against Grass?
Grass attacks deal ×1.6 to Water, Ground, Rock. Use Grass attackers to clear those defenders quickly in raids.
›Which Grass-type mons are best in PvP?
Tapu Bulu, Roserade, Venusaur (CD), Trevenant — Grass is heavy in Great + Ultra ladder. League fit: Great / Ultra.
›How do dual-type Grass defenders compute damage?
The matrix is multiplicative. If a Grass/Y dual-type has two weaknesses to the attacking type (one from Grass, one from Y), the multiplier stacks to ×2.56 — the maximum without STAB / weather.
The complete attacker-vs-defender chart for every type pairing in the game.
Top S-tier and A-tier attackers grouped by attacker type — full picker for Grass bosses.
Pick an actual current raid boss and get counter recommendations scored by tier × type effectiveness.