Ya I've checked the country of origin for the produce , a lot of it reads Mexico & Canada .
Check again.
n 2012, California's 80,500 farms and ranches received $42.6 billion for their output. California remained the number one state in cash farm receipts with 11.3 percent of the US total. The state accounted for 15 percent of national receipts for crops and 7.1 percent of the US revenue for livestock and livestock products. Exports totaled $18.18 billion in value which represents an eight percent increase over the previous year.
California's agricultural abundance includes more than 400 commodities. The state produces nearly half of US-grown fruits, nuts and vegetables. Across the nation, US consumers regularly purchase several crops produced solely in California.
California's top-ten valued commodities for 2012 are:
Milk — $6.9 billion
Grapes — $4.449 billion
Almonds — $4.347 billion
Nursery plants — $3.543 billion
Cattle, Calves — $3.299 billion
Strawberries — $1.939 billion
Lettuce — $1.448 billion
Walnuts — $1.349 billion
Hay — $1.237 billion
Tomatoes — $1.170 billion
http://www.cdfa.ca.gov/Statistics/
http://www.ers.usda.gov/faqs.aspx#10
A: The top 10 agricultural producing States, in terms of cash receipts are (in descending order): California, Iowa, Texas, Nebraska, Illinois, Minnesota, Kansas, North Carolina, Indiana, and Missouri. These and related statistics can be found among ERS's Farm Income and Wealth Statistics.