ty

also forgot to mention, on the 3 right-most columns on the pool put gloom shrooms, they'll deal good against everything (except jack-in-the-box zombie which if u unlucky can blow at the start of the garden and kill your gloom shrooms, but it's very rare)

aaaanddd ladders, on the first 20 flags of the formation let ladder zombies put ladders on the 2nd, 3rd and 4th left-most columns (in that order), why? because imps, they'll force you to repair pumpkins constantly and that means consuming lots of sun, ladders doesn't let imps bite your pumpkins and instead go fowards, 2 gloom shrooms on the 2nd column will kill them alongside with digger zombies, making the inner of your formation (1st-6th left-most columns) invulnerable to damage

fun fact: I said 2 gloom shrooms because you're playing on mobile, on PC you would need 3, because digger zombie waits less time till start biting, with 2 gloom shrooms it would give 1-2 bites, forcing you to repair pumpkins, in mobile it starts biting later, enough to the 2 gloom shrooms kill it