User blog comment:Milesprower2/My Terror from Tomorrow guide/@comment-27557697-20140924001934

My premium strategy:

Twin sunflowers

Imitater Twin Sunflower (If upgraded to have 8 seed slots)

Snap Dragon

Winter Melon

Cherry Bomb

Squash

E.M Peach

Hypnoshroom

Start planting Twin sunflowers very early on, using squash to deal with the first few zombies (while building up 2 rows of twin sunflowers.) Use Snap Dragon as a last resort, and if you absolutely need to use a cherry Bomb, use it. The E.M Peach should be used when there are a large group of machines. Cherry bombs can be used in dense group of machines as well. Build up rows of Winter melons after you have 2 rows of twins (Or plant a wintermelon if you ever have excess of 500 sun while waiting on more twins). Finally hypno shroom should be saved for robocone zombies, (Which are pretty much ensured to do some damage), or a disco tron 3000 (Will not usually get that far into your lawn, but if it does use the hypno shroom on it since it spawns disco jetpack zombies).

Got to level 50+ with this strategy.