Hibiscus rosasinensis, also known as Zhu Xi and Fosang. Malvaceae is a evergreen shrub. Leaves alternate, margin serrate, ovate or broadly ovate. The flowers are large, bright and dazzling, facing the open wilting, colorful, elegant gesture, long flowering period, single-lobed, double-lobed, single-flowered corolla funnel-shaped, female and stamens exceeding the corolla; double-flowered corolla rose, androgen Do not stretch out. Colors are yellow, orange, pink, dark red and other colors, which are more common in China. Because they are not tolerant to cold, the northern region is mainly used for potted plants, while the south is often used for gardening. Fuso is native to China, and it is warm, moist and sunny. It can withstand high temperatures and can still grow normally at high temperatures above 30°C. Not cold, not overcast. The optimal temperature for growth is 15-25°C. The winter temperature in winter is not lower than 5°C. When it encounters 0°C, it is frost-damaged. The hibiscus is resistant to moisture and dry, and the potted soil in the growing season should be kept moist and the stems and leaves grow rapidly. If the water supply is insufficient, the leaves may become yellow and fall off. In winter, when it is winter, it is necessary to strictly control the amount of watering, so that the pot soil is not wet, hibiscus is a strong positive plant, the growth period must have enough sunlight in order to normal flowering, such as lack of light, the flowers are easy to fall off the flower buds. In the cultivation process, reasonable fertilization will make the leaves dark green, give birth to more buds, pay attention to fertilization should pay attention to the application of thin fertilizer, avoid application of concentrated fertilizer. Fusang's flower buds are born on the annual shoots, so hibiscus's pruning and shaping can increase disagreements and encourage multiple buds to bloom. When the seedlings are 15 cm high, they are picked and dried, and 3-5 lateral branches are reserved. When the lateral branches are extended to 5 leaves, the tops of the domes are made, and 2-3 buds can be drawn from each branch. The old branches after flowering should be re-cut so that each branch retains 2-3 shoots, which is conducive to the expansion of the plant and maintaining a beautiful canopy. Fusang is usually propagated by cuttings. In the greenhouse in the early spring, pruning can be performed at any time, and outdoors are often conducted in April-May. Seedbed should choose good ventilation sand, after washing, then use 100 °C high temperature sterilization into the cutting bed, the thickness of 15-20 cm. The annual semi-lignified shoots were selected for cuttings, and the length was about 10 cm. The lower leaves were cut off and the top two leaves were left. The incision should be smoothed and inserted in the sand bed. The cutting depth should be 3–4 cm. The spacing should be 44 cm. After the insertion, the water should be sprayed in a timely manner and covered with a plastic shed to keep it moist. At a temperature of 18-25 °C, after approximately 10 days, callus can be grown, rooting generally occurs after 20 days, and the pots can be grown after one and a half months of growth.
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