It's time for the green plant army to mobilize again. Because zombies and monsters have become active and are going to move their hordes to the borders of a peaceful green garden. Thorns placed on the borders will delay the enemies, but not for long, it is necessary to place various plant warriors behind the shelters. And in order for them to be able to repel any attacks, you need to increase their level and change them to stronger ones. To do this, combine two identical plants and for each monster there will be a worthy rival in Plants Vs Zombies - Merge Defense. Your tactics should bring victorious results.