Zombies in the night garden

In nighttime levels of the PopCap game Plants Vs. Zombies™, fog confuses things, the gardener obtains energy to keep planting  by swooping a cursor past solar power (a) collected by growing mushrooms . Some of the fungi shoot zombie-knocking spores, others such as this psychedelic 'shroom (b) are not aggressive but when eaten, turn zombies against their own kind. The gardener contends with real garden woes, such as the inability to plant in craters -- this one (c) formed when a potato mine exploded.