What changes do plants have in autumn?

Autumn is also autumn, which is one of the four seasons of "spring, summer, autumn and winter". In China, traditionally, "beginning of autumn" in the 24 solar terms is taken as the starting point of autumn. It is autumn in beginning of autumn so far, which means that precipitation and humidity are at the turning point of the year, and there is a tendency to decrease or decrease. In nature, everything begins to grow from lush to rich and mature. Autumn is the harvest season, and many plants mature in autumn. In autumn, in nature, the qi of yin and yang begins to change, the yang is gradually declining, the yin is gradually flourishing, the climate turns from hot to cold, and everything is born with cold and gradually declines. This is the season of alternating hot and cold. As the temperature gradually drops, the leaves of many deciduous perennial plants will gradually change color, wither and fall off, leaving only branches for winter. Panicum miliaceum will come to the end of his life, wither and die. Seasonal variation covers many aspects of climate characteristics, and it is not accurate to judge autumn only by temperature. The most obvious change in autumn is that the leaves of vegetation change from lush green to yellow, and the leaves begin to fall and the crops begin to mature.

Some flowers will bloom in autumn: the flowering time of plants is different, and some plants, such as crab claw orchid, forget-me-not, wild rose, osmanthus fragrans, chrysanthemum and hibiscus, will bloom in autumn.

In autumn, some fruits will mature: some plants will bloom in summer and bear fruit after flowering. In autumn, fruits generally grow and mature. Some fruits are edible, such as persimmons and oranges, while others can only be viewed.

There will be a lot of fallen leaves in autumn: for perennial plants, most plants will have fallen leaves, which is a natural phenomenon that plants show in order to adapt to the severe winter. Plant leaves will gradually turn yellow, curl and fall off. After autumn, the temperature will continue to drop, the respiration of plant roots will be weakened, the water supply will be affected, and normal physiological activities such as photosynthesis and transpiration will be hindered. At this time, the leaves will enter a state of aging, and it is normal for the leaves to fall. Deciduous leaves are plants to preserve water in their bodies so as not to threaten the growth of plants.