Generally, the reproduction of plants is divided into sexual reproduction and asexual reproduction. Sexual reproduction refers to the sowing of seeds to propagate offspring. Asexual reproduction is also called vegetative reproduction. It uses parts of plants, such as leaves, branches, etc., to cultivate new plants. Such methods include cutting, grafting, and layering. Please scroll down to learn about these methods.
Sowing propagation is suitable for most herbaceous plants, and it includes open field sowing and potted sowing. For the planting of flowers, potted planting will be selected under normal circumstances, but you should choose a flower pot with a relatively large diameter. Because the water is easily lost when the flowerpot is too small, which is not conducive to seed germination and seedlings growth. If potted sowing is adopted, the most important thing is to select excellent seeds. First, plug the drainage holes in the pot with broken tiles, sift the dry culture soil, put the coarse particles at the bottom of the pot, and put the fine culture soil on top. Then the seeds can be planted in the soil. Besides, as for open field sowing, we should choose the place with flat terrain, sunny leeward, loose soil and good drainage. In general, 2-3 seeds per hole are used to ensure the seedlings are neat and prepare for the selection of strong seedlings in the future. After sowing, you should cover the soil first, press it gently with your hands to make the soil more solid and prevent the soil surface from collapsing.
Take advantage of plant vegetative organs (roots, stems, leaves) for cutting, so as to form a propagation method of independent plants, called the cutting method. The plants cultivated by this method grow faster than sowing, and can grow into large seedlings in a short time, especially for some plants that are not easy to blossom. But the cutting seedlings have no taproot, and their root system is weaker than the sowing seedlings.
Choose relatively tender branches, cut off the redundant branches and the leaves, and cut them into 2 or 3 segments, each about 10 cm to 20 cm. For instance, chrysanthemum, willow, etc.
Cut the leaves and insert them into the soil to make them root. For example, begonia, sinningia speciosa and so on.
Cut the roots of plants, and insert them into the soil to propagate. Such as the root of dandelion.
The method of grafting is a horticultural technique in which the branches or buds are grafted to the appropriate part of another plant to heal and form a new plant. Grafting includes many methods, but splitting is a common method, especially when the rootstock is thick. You should cut the rootstock first, and the cutting edge should be flattened with a sharp knife. Then use a knife to split the rootstock, the splitting position can be on one side or in the center, and the splitting depth can be determined according to the length of the cutting surface of the scion. The scion is cut into two equal oblique cutting surfaces, and the cutting surface length is about 2 cm. Use a splitting knife or a wedge to pry the cut of the rootstock, and insert the scion quickly, so that the scion is aligned with the cambium of the rootstock. After alignment, you should immediately wrap it with a plastic film and tie it tightly. If the thickness of the rootstock is too large, 2-4 scions can be grafted on the rootstock at the same time, which is conducive to promoting interface healing.
There are four methods of layering propagation, including common layering, horizontal layering, air layering and wavy layering.
This method is suitable for some plants with soft branches and some plants with curved branches. First of all, the branches near the ground of the mother plant are bent around, pressed into the pit and fixed, covered with soil and compacted to bend the branches, and then insert a support in the part that is vertically exposed to the ground.
This method is suitable for some plants with long branches and easy to root. The branches are cut at appropriate intervals and fixed horizontally in each pit, remove the buds that grow down on the branches and fill the soil. After rooting and sprouting, they were cut off one by one at the nodes, and each seedling was attached with a section from the parent.
This method is suitable for some plants that grow tall and are not easy to bend. Choose strong branches, peel 2-4 cm at a place on the branches, scrape off the cambium and wounds, then wrap and fix them with plastic cloth, and cut them into new plants after growing roots.
This method is more suitable for plants with long branches and vines. Generally, bend the branches and vines into a wave shape, and then bury the ground part in the soil. After the isobaric part grows roots and sprouts on the ground, you can cut into new plants one by one.
Plant reproduction is not only a natural phenomenon that reproduces offspring and continues species, but also one of the basic characteristics of plant life. These are some methods of plant reproduction, if you have any questions, welcome to comment below!