What stalk is covered with frost?

The forest in the early morning is covered with frost, telling us that it is already late autumn. Among the solar terms in the lunar calendar, there is a solar term called the first frost. After the first frost, frost began to appear on the leaves of plants in the morning.

So do the trees in the forest. After the first frost, the temperature will drop sooner or later. When there is a sun during the day, after the water vapor evaporates, the water mist left on the leaves will condense into some small ice at night because of the temperature drop. In the morning, there will be a layer of frost on the leaves of trees and plants. Therefore, in late autumn, the forest in the morning is covered with frost.