Due to six rows having a minecart, this means these columns can only have one defending or attacking plant at a time. With relatively quick waves with chicken wranglers and gargantuars in the end, day 30 is no doubt quite tricky, especially with row 4 plants being especially vulnerable.
It is ideal to use strong attacking plants on the minecarts on the first three columns, (such as peapod or frost/normal watermelon) while the last three column are nearly useless since they can only defend three rows at maximum. It is also recommended to use lightning rod to handle the chicken wranglers and primal wall-nut to stop the gargantuars.
- *: Removed