I’m not sure what year this advertisement is from, but I would guess by appearances, somewhere in the ’50s. Either way, it appears that some food marketers were intent on scaring the living bejeezus out of kids in order to convince them to eat their vegetables.
The Jolly Green Giant that I recall from growing up in the ’70s and ’80s was a bit more on the actual Jolly side rather than the I’ll-rip-your-head-off-and-serve-it-with-your-green-beans look that began the campaign:

Elmer “Len” Dresslar Jr., who was the man behind the deep voice that hocked vegetables as the Jolly Green Giant, died at the age 80 in 2005.


