*snip for my sanity
I always just sunflower the first 2 rows then walnuts then 2 rows of peashooters then walnuts! It's probably the best (and easiest) way to beat the game! Never had a problem with Miners though...
Waste of a column. Theres no need for TWO columns of Wallnuts if the 1st (One on the most right) column is doing it's job holding off zombies. If you have Walnuts protecting just sunflowers, then they're just sitting there doing nothing, making them a waste of space and sun. And if you're bad enough at the game that zombies always break through the 1st wall and manage to get to the 2nd to justify the 2nd column's existence, then you're NOT playing the game like a boss.
You should only need one column of Wallnuts at the very most.
Though you do have the right idea with two rows of sunflowers.