What temperature conditions does a jujube tree need for growth and development?

The jujube (Ziziphus jujuba) originated in the north, and during its dormant period it can withstand low temperatures of minus 30 degrees, while during the growing period it can also tolerate high temperatures of 40 degrees. In spring, when the average temperature reaches 13 degrees, the sap begins to flow, and when it rises above 14 degrees, the tree buds, sends out shoots, and unfolds its leaves. When the daily temperature is 22 to 24 degrees and the difference between day and night temperatures is large, it helps with sugar accumulation. In autumn, when the daily average temperature is 14 degrees, the leaves fall.