I was a late child from my parents, so I grew up surrounded by people a lot older than me. I think even when I was 21, I felt like I was a 70-year-old man.
You could increase farmworker wages significantly and not change the price to the consumer at all - for instance, if you redistribute how revenue is paid out across the food chain. Labor costs, particularly farm labor, is a tiny portion of the price we pay at the supermarket.