Key points of chrysanthemum rosette cultivation and propagation Chrysanthemum, also known as five-color chrysanthemum, is an annual or biennial herb of chrysanthemum in Compositae. Its origin is Morocco. Because of its beautiful flowering patterns and rich colors, plants are now more and more popular with people. Commonly used in garden flower beds, flower borders or potted plants. During the whole flowering period, the following are some key points of plant cultivation for reference: suitable temperature. The optimum growth temperature of plants is between 15-30, the temperature in the growing period can be higher, and the temperature in the full flowering period can be lowered to prolong the flowering period. Plants like sunny days, but they can also tolerate a certain shade environment. Indoor planting is best placed in the balcony with sufficient light. Soil conditions are suitable for growing in loose sandy soil with good drainage, and peat soil or humus soil+fine sand can be used to prepare culture soil according to the ratio of 2: 1. Rational fertilization is beneficial to the healthy growth of plants. Basic fertilizer should be applied in the early stage of planting, and organic fertilizer should be applied every two weeks in the growing period. Compound fertilizer can also be applied in small quantities. Methods Potted plants were watered according to the principle of "seeing dry and seeing wet". Water it once in spring, summer, morning and evening, and appropriately increase the humidity of the surrounding environment. Propagation usually adopts sowing method or cutting method. Sowing is mostly carried out from early autumn to Mid-Autumn Festival. In the cold winter, you can build a mat to keep warm. Generally, tender cuttings are used and the temperature is controlled at about 25℃. When the roots of the seedlings turn from white to brown, they can be transplanted. Sunflower soot disease and aphid damage often occur in poor ventilation, high temperature and high humidity growth environment. Indoor cultivation should be ventilated to avoid high temperature and humidity. Remarks: The stationmaster himself has been to Chengdu Botanical Garden in Sichuan and found that there are many varieties of sunflowers planted in two places. One place is planted next to sparse forests and shrubs on the roadside of the park, which is sunny in the morning and basically in a semi-cloudy environment in the afternoon. The other place is in a semi-cloudy and humid environment all day and grows healthily. The habitat of these two places can be used as a reference for flower growers to plant.