Which of the following plants does well in below freezing temperatures?

Carrots are well-known for their ability to thrive in cooler temperatures, and they can even survive below freezing conditions. The cold actually enhances the sweetness of the carrots, as the plant undergoes a process that converts starches into sugars when exposed to cold weather. This makes them more palatable and often improves their flavor profile when harvested in colder months.

In contrast, other plants listed, such as watermelons and corn, are sensitive to frost and require warm temperatures to grow and develop successfully. Watermelons are typically associated with warm, summer climates and would not survive freezing temperatures. Corn also needs warmth for germination and growth, making it susceptible to damage from cold conditions. Cacti, while drought-resistant and able to tolerate heat, generally do not perform well in sustained cold temperatures, especially below freezing, where they can suffer damage from frost.