you plant a grave buster on the grave and it will destroy it in a few seconds, but a zombie can destroy the grave buster when it's planted on the grave so you should put something in front of the grave buster when it is destroying a grave. hope it helped :D
plants vs zombies
Plants vs. Zombies happened in 2009.
9999 plants vs zombies
you can download plants vs zombies at gamehouse
plants vs zombies ps3 oao
plants vs zombies definetly
If you have Windows 7 you have Plants vs. Zombies for Free
Plants vs. Zombies was first released for PC and Mac on May 5, 2009
No you do not pay for plants vs zombies each month
Plants vs. Zombies 2 available now for free
no plants vs zombies 2 is fake ok
plants vs. zombies 2 is coming out in 2011-2012 i believe