Stone-shroom

Stone-shrooms are very essential instant plants. They are like the Ice-shroom, except Stone-shrooms turn all zombies on the screen into stone  and when they are frozen in stone, they cannot move for a time of infinite but can be killed.

Surburban Almanac Entry
Ice-shroom

Ice-shrooms temporarily immobilize all zombies on the screen.

Damage: Normal

Range: all zombies on the screen

Usage: single use, instant

Sleeps during the day

Stone-shroom is really shy and lonely. And that's because of what happened one day when he turned the zombies to stone everybody thought that he was medusa.

Cost: 200

Recharge: very slow

Strategy
You should plant Stone-shrooms when there a lot of zombies on the screen. In Dr. Zomboss's Revenge, they are usefule because they immobolize Dr Zomboss's fireballs and iceballs except you will still have to use a Ice-shroom or Jalapeno to make the fire/iceball dissapear. It is very useful in Survival:Endless if there are a lot of zombies on the screen. Stone-shrooms can be planted anywhere on the screen and still immobilize everything.

Trivia

 * When a Stone-shroom explodes, there will be crumbles of stone and when a Ice-shroom explodes, there will be snowflakes.
 * When a stone zombie gets killed not by an instant, the stone will crumble and the zombie will fall out and dissapear.
 * When zombies are frozen, their health is the exact same as before.
 * Stone zombie's appearances do not change (for an example, their arms do not fall off).