| Type | grass |
| Category | Status |
| Power | 0 |
| Accuracy | 100 |
| PP | 40 |
| Introduced | Generation 2 |
Cotton Spore lowers the target's Speed by two stages.
Stats can be lowered to a minimum of -6 stages each.
When a Pokémon is holding Grassium Z and uses its Z-Power, Cotton Spore turns into Z-Cotton Spore and eliminates any stat drops applied to the user, in addition to its usual effect as above.
| Gold Silver Crystal | Sharply reduces the foe’s SPEED. |
| Ruby Sapphire Emerald | Spores cling to the foe, sharply reducing SPEED. |
| FireRed LeafGreen | Cotton-like spores cling to the foe, sharply reducing its SPEED stat. |
| Diamond Pearl Platinum HeartGold SoulSilver | The user releases cottonlike spores that cling to the foe, sharply reducing its Speed stat. |
| Black White Black 2 White 2 | The user releases cotton-like spores that cling to the target, harshly reducing its Speed stat. |
| X Y O.Ruby A.Sapphire | The user releases cotton-like spores that cling to the opposing Pokémon, which harshly lowers their Speed stats. |
| Sun Moon Ultra Sun Ultra Moon | The user releases cotton-like spores that cling to the opposing Pokémon, which harshly lowers their Speed stat. |
| Sword Shield B.Diamond S.Pearl | The user releases cotton-like spores that cling to opposing Pokémon, which harshly lowers their Speed stats. |
| English | Cotton Spore |
|---|---|
| Spanish | Esporagodón |
| Italian | Cottonspora |
| Japanese | わたほうし (Wata Hōshi) |
| German | Baumwollsaat |
| French | Spore Coton |