(My English is suck, so i use gogle)
A little problem
you see, dear writer, I don't know where did your inspiration come from, PVZ1 or PVZ2?
for 1, due to it is linear level, your plant can hard-binding zombie(I don't know how describe it abstractly), like split for miner, clover and cactus for balloon
for 2, it is not linear level, plant can binding zombie so.......hard, if you not have clover, but you have high attack, you still can defeat balloon
but in this game, I see monsters hard-binding babies like 1, but it is not linear level like 2, so i want know where did your inspiration come from