User blog comment:WatchGrassGrow/Survival: Endless/@comment-1413618-20100926052800/@comment-1675411-20100926121837

Personally, I use both Blovers and Cattails (I take Blovers for backup) since once, after a Balloon Zombie set off a Lawn Mower two others came in the same row and, after a spike from the Cattails took down one of them, the spike that was going to hit the second turned around and went back to the one on the ground.