What method to use to keep the plant growing in autumn without losing its leaves?

Causes of tree leaf loss in autumn.

When autumn quietly comes, the air becomes drier, and the water in the leaves evaporates through the many voids on the leaf surface, and at the same time, as the weather gets colder, the role of the roots of the tree decreases, and the water absorbed from the ground decreases, making the water supply in short supply. If this continues, the tree will die quickly, and in order to continue to survive, the petioles and branches are connected to form a detachment (even note what is called a detachment - the petioles are originally stiff and stiff on the branches). In autumn, as the temperature drops, several layers of fragile parenchyma cells form at the base of the petioles.

Because these cells are easily separated from each other, they are called delamination. When the separation layer is formed, it breaks if it is blown by a slight breeze, and the leaves fall down. , the water is no longer transported to the leaves. When the leaves fall off, the bare branches are left, and the tree's water consumption is reduced, so the tree can survive the winter safely, so the tree is also beneficial to lose its leaves.

Trees don't all fall in autumn, as you said, trees like pines and cypresses are often described as "evergreen", it seems that the leaves are not yellow, do not wither, but we walk into the pines and cypresses, and we will also find that there will always be layers of fallen leaves on the ground. Pines and cypresses belong to evergreen plants, their leaf life is much longer than the leaves of the fallen leaves, the needles of the pine tree can live for 3-5 years, and they are not like deciduous plants in the old leaves fall off after the new leaves grow, but after the new leaves are born, the old leaves fall off one after another, so the trees maintain the appearance of perennial green, never become bare.

Therefore, since it is not an evergreen plant, there is no way to keep it from falling leaves, this is a law of nature, and it is best not to destroy it.

If you put it indoors at enough temperature, you can do the rest as usual!! If it is in line with the growth environment of the plant, it will continue to grow without losing leaves.

It's okay to keep it indoors.

Put it in a book first, flatten it, and then stick it to the wall after drying. I thought of another way, but I don't know if it will work, which is to put transparent glue or lacquer on the leaf to isolate the leaf from the air.

Abscisic acid, a plant hormone, is produced in the leaves. When the abscisic acid in the leaf is transported to the base of the petiole, a layer of very small parenchyma cells with a very thin cell wall will be formed at the base of the petiole, which is separated from the layer, and the formation of the separation layer makes it impossible to transport water to the leaf normally.

Under the action of abscisic acid, a natural fracture surface will be formed around the separation layer. Due to the lack of sufficient water**, the leaves will gradually dry up, and the natural fracture surface will become more and more obvious. As soon as the autumn wind blows, the deciduous nuclei will fly faintly, and they will automatically drift away if there is no wind.

Due to the sensitivity of various trees to the length of sunlight and the need for water, the time of defoliation is also different. Even if the same tree is located in a different environment, the defoliation time will be different.

Plants that do not lose their leaves in autumn include pine, cypress, camphor, privet, boxwood, tung, Guangyu forest hall, camellia, rhododendron, orange, bone, stepwood, euonymus, rubber tree, podocarpus, cycad, rice seed orchid, osmanthus, laurel, etc.

As the temperature is generally lower in autumn and winter, the climate is drier and more prone to water shortage, resulting in the cessation of plant growth, the loss of all leaves, and the emergence of young leaves in the following year.

Except for the species that grow in tropical and some temperate regions, which are mostly evergreen, the rest of the plants are deciduous or semi-deciduous species. Semi-defoliation means that the plant is also affected by the climate in autumn and winter, which causes growth to be stunted, and its leaves are partially shed.

<> as the head of the family, he takes the children into a "special" school in nature, and is often asked all kinds of whimsical questions, such as: autumn is coming, why do trees lose their leaves