Trivia: What crop should be “knee-high by the Fourth of July”?
Potato plants
Wheat
Corn stalks
Strawberry plants
The correct answer is Corn stalks
So why is this answer correct? : “Knee-high by the Fourth of July” was an old expression used by corn farmers to gauge the success of their harvest each year. However, thanks to advancements in farming, corn is now typically 8 feet tall by midsummer — much higher than the average knee. As such, a new adage has emerged, borrowed from a number in the musical “Oklahoma!,” which says that the corn is “as high as an elephant’s eye.”