Firegrass + Prisman → Dissolverock

Firegrass + Muka Muka → Dissolverock

Firegrass + Skullbird → Crimson Sunbird

Firegrass + Monstrous Bird → Crimson Sunbird

Firegrass + Milus Radiant → Flame Cerebrus

Firegrass + Togex → Flame Cerebrus

Firegrass + Eldeen → Queen of Autumn Leaves

Firegrass + Mechaleon → Snakeyashi

Firegrass + Niwatori → Mavelus

Firegrass + Corroding Shark → Pumpking the King of Ghosts

Firegrass + Skelgon → Pumpking the King of Ghosts

Firegrass + Bone Mouse → Wood Remains