Will grape leaves fall at 12 and 13 degrees?

Under normal circumstances, under the temperature of 12 degrees and 13 degrees, the leaves will not fall to sleep.

Generally, grapes fall leaves and naturally sleep at 3~5℃.

When encountering diseases such as downy mildew, it may cause a lot of fallen leaves, which has nothing to do with temperature.

In addition, under extreme drought conditions, the vines will mature ahead of time and fall asleep, and only a few leaves at the tip of the new shoots continue to grow, but the speed is extremely slow. It will still grow rapidly after precipitation.