Wild West Level 21

A tricky level, because you do have to watch what you spend... I got through this level without planting any sunflowers, I just put a multi-pod peashooter on each of the train tracks, and placed wall-nuts on the flower bed squares as needed and bombs directly behind the pea shooters to counter the guys that jump to the other side.

I also needed to use a chilli early in the stage before I managed to ramp up my peas shooter level.