The Sweet Frost Jujube tree, a popular hybrid variety that combines the best traits of the Honey Jar and Sugarcane Jujube trees. With exceptional cold hardiness, this tree can withstand temperatures as low as negative thirty-five degrees Fahrenheit. 3. Enjoy the perfect balance of crunchiness from the Honey Jar Jujube and the sweet flavor of the Sugar Cane Jujube. Cultivated in 2001 by Wing Wong of Tianjin, China, the Sweet Frost Jujube tree has gained popularity in North America for its cold hardiness and delicious taste. Considered one of the top three choices for overall taste, this tree is a must-have for any jujube enthusiast. (USDA Zones 5-10)