Cacnea locations — where to catch

In Paldea (Scarlet & Violet)

• Asado Desert — Walk
• West Province (Area Two) — Walk

In Sinnoh (Diamond, Pearl & Platinum)

• Route 228 — Walk

In Johto & Kanto (HeartGold & SoulSilver)

• Johto Safari Zone — Walk

In Hoenn (Ruby, Sapphire & Emerald)

• Route 111 — Walk

Other games (2)

• Brilliant Diamond / Shining Pearl (Gen 8): Route 228
• Omega Ruby / Alpha Sapphire (Gen 6): Route 111

Cacnea — full Pokédex entry