Where to find Pokémon in Johto & Kanto at Celadon City (Pokémon HeartGold & SoulSilver)

Pokémon at Celadon City

• Spearow — Headbutt
• Grimer — Surf
• Muk — Surf
• Heracross — Headbutt
• Combee — Headbutt

Pokémon HeartGold & SoulSilver interactive map (Johto & Kanto)