User blog comment:Milesprower2/Top 15 Best and Worst Plants in PvZ1/@comment-1716189-20150817114443/@comment-5792287-20150817141116

Because of Squash's targeting. It can attack zombies up to 2.5 spaces to the left of it, and so it might attack a single zombie that appears to be out of its range instead of a massive group of zombies on its own space. It's a likely unintentional difference between PvZ1 and 2, but it's a difference that causes big problems, and makes me dread most Squash-related Pinata Parties.