Take a look at 'just' almonds. Almonds are a "non-native" plant that came from the Mediterranean.

Some 1.6 million acres of almond trees in California. That produces just about 2.8 billion pounds of almonds. It takes around 1900 GALLONS of water to grow one pound of almonds. That works out to about 16 million acre feet of water per year. More than is used by people in Los Angeles.

When you take into account all the new things that they keep making out of almonds, everything from "milk" (I prefer the term nut juice) to cleaning supplies (specifically the shells are used in soaps, cutting back on water intense farm products during a 2 decade draught, rather than continuing to expand, makes sense