Begonia flowers have different strains and are often propagated by sowing, cutting and dividing roots and rhizomes.
Seeding and propagation: Seed propagation of bulbous sea bream, sea bream, etc. The family's room temperature is low, with multiple selections sown in March or April. Sowing should be done using shallow basins and plain sandy soil. The basin should be flooded with water, the surface should be flattened with a plate, and then the seeds and fine sand should be mixed and broadcast. After the sowing, it is not necessary to cover the soil, cover the glass on the pot, and then place it at the half shade to keep the potted soil moist and pay attention to the appropriate drowning. Buds can be sprouted from about 15 days to 25 days at room temperature between 18°C ​​and 21°C. When two or three leaflets grow, they can be planted into shallow basins with bare roots. The pottings are mixed with sand and soil in the same proportion. The planting distance is 2 cm to 3 cm. When the seedlings grow to about 3 cm, they are moved to the soil with the soil to increase the basin diameter.
Cutting propagation: usually at room temperature at 20C, and when the environment is wet, the cuttings can be cut. When the temperature exceeds 25C, the cutting seedlings are perishable.
Cuttings should be made in large flower pots, wooden boxes or seedbeds. Use of coarse sand or vermiculite works best.
Branches are mostly used for bamboo, silver stars and other fibrous roots. The method is: cutting branches with lengths of 8 cm to 10 cm from the excellent and robust mother plants for cuttings, cutting the lower leaves, and the cutting depth is about 1/3 of the cuttings. After plugging in, cover the plastic film or glass to keep the air humidity, shade 50% to 70%. In the later period of conservation, if you use coarse sand as the cutting soil, you need to spray water every day. You can spray the soil with water that is strong enough to hold water, such as vermiculite, and spray it once every two or three days. Keep the temperature between 21C and 25C, and root the pots about two weeks later. In addition, the lower half of the cut cuttings can also be soaked in clear water. When the water is turbid and white, replace it with fresh water of the same water temperature. After about three weeks, it can be rooted, and then use a plain bowl.
Leaf plugs are often used for leafy hairy begonias, such as hairy sea otters. The method is: selecting robust, mature leaves, cutting the main vein with a small knife every 2 cm to 3 cm, flattening the leaves on a cleaned plain sand bed, burying the petioles in the sand, and pressing on the leaf surface. Some grains of sand make the backs of the leaves in contact with Susanna, and they often pay attention to water spray to keep the plugs moist. At a temperature of 21C to 25C, about 40 days, roots can be formed at the transverse vein incision and seedlings can grow. In addition, the leaves are cut along the main veins into small triangular pieces and inserted vertically into the sand bed, which also takes root to grow young shoots. However, the survival rate is not high due to the high technical requirements of the leaf plug.
Dividing roots and rhizomes: Dividing the roots of the roots can be used for bulbous sea lice, usually before the sprouting of early spring shoots. Divide the root of the block into blocks, each with at least one or two buds. Cut charcoal powder or sulfur powder at the incision to prevent it from rot. After the incision is slightly dry, plant it again. In addition, rhizome hairy seabream can also be rooted in the spring. The splitting method has a low reproduction rate and is rarely used except for excellent varieties.
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