Board Thread:Plants vs. Zombies 2: It's About Time/@comment-25154254-20141201133040/@comment-25783626-20150222133921

Cheetah-shooter wrote: level 4 give +50% health and attack again for balance. It doesn't say anything about the Health and Attack. It just SOMETIMES gives the plant food ability,that's all.

I think that's enough "balance" for a Lvl 4 plant.