Miasmo initially sends several Smoglings after Chibi-Robo. Defeat the Smoglings to cause seed to get planted. If a Flower is grown, a Happy Point will appear and fly into Miasmo causing him damage. Throughout the fight, Miasmo will occasionally change a lot of Flowers to Miasmo Flowers. He regains health whenever there is Miasmo Flowers, but turning a Miasmo Flower back to normal will cause a Happy Point to appear and fly into Miasmo. Eventually, he sends out a Smogglob. Defeating it will cause many seeds to appear. Once he has ten health left, General Greenthumb jumps on him and starts tickling him, preventing him from turning flowers to Miasmo Flowers. Once he has no health left, he vanishes.