Blover

A Bloveris a one-time use plant that blows away all fog and all Balloon Zombies

Usage
Planting a Blover costs 100 Sun. Immediately after planting the leaves of the plant spin vigorously, pushing all the fog and balloon zombies off to the right of the screen.

The Fog stays off the map for 15-20 seconds [spading needed]

Strategy
A Blover is much more efficient at dealing with numerous Balloon Zombie incursion than a cactus is. It is prohibitively expensive to use more than a few times, so hold off using it to let more Balloon Zombies to be swept up. For just clearing out the fog, the Plantern is a better choice.