Per the article: >While Victory Gardens were portrayed as a patriotic duty, 54% of Americans polled said they grew gardens for economic reasons while only 20%

Per the article: >While Victory Gardens were portrayed as a patriotic duty, 54% of Americans polled said they grew gardens for economic reasons while only 20% mentioned patriotism. (which cites the book Eating for victory : food rationing and the politics of domesticity) Combined with the produce shows and competitions mentioned, I'd put indirect social pressure and saturation advertisement above the patriotism angle with this in mind. I'd wager that if there was a push to have people grow their own veg again, citing economic reasons, and calling them "freedom gardens" or some such, we could see a similar level of success.