Wheat and potato's can grow in California too. California and the PNW are extremely fertile.
They don't need flyover country.
California couldn’t exist without massive army crops of engineers projects bringing water to most of the state.
So? The projects are already built and the water comes from within the state, for Northern California and most of the agriculture. Only the cities of Southern California rely on water from other states.
they are also way too small to grow enough food for colossal cali cities. and most of that agricultural land east of the coast is very red. look how many people in east oregon want to deadass secede to idaho because they're so sick of portland's bullshit.