Board Thread:Plants vs. Zombies Wiki Discussion/@comment-25214517-20141125012419/@comment-24860884-20141125024630

Though Blover can blow a Garg-Prime, I still am not sure if Blovers will be effective against Wrenches. They made octopuses¹ immune to blover (Wtf PopCap!).

¹http://grammarist.com/usage/octopi-octopuses/