To maintain good chrysanthemum, so that it spends large leaves green, well-balanced body shape, moderate height, must be done watering, fertilization, topping, peeling buds, change basins, disease prevention and other work. First, watering watering should pay attention to timely and appropriate, such as when the basin is too wet, the roots are most likely to rot. When chrysanthemums are placed on pots or pots, they must be poured thoroughly; during the rainy season and the continuous rainy days, we must pay attention to flood prevention and clear the water in the basin. The watering is best in the morning and generally not watered before and after noon. In the afternoon, if the leaves are not wilting, they can not be watered in the evening; the chrysanthemums in the afternoon are slightly wilting and do not rush to water. If the wilting is heavy, you can move it to a cool place. Spray water at the foliage. Second, fertilization chrysanthemum hi fertilizer, commonly used fertilizer cake water, human waste, urea, potassium dihydrogen phosphate, etc., but fertilizer should be timely and appropriate. In the period from the time when the young seedlings are in the pot to the beginning of the autumn, the frequency of fertilization is small and light, and it is applied once every 7 to 10 days, and the concentration is about 15% (organic fertilizer). After cool autumn, the growth of the chrysanthemum seedlings was accelerated, and the number and concentration of fertilization increased accordingly. Once every 5 days, the concentration was 20%. When pregnant buds are in early September, it is not suitable to apply concentrated fertilizer so as not to affect the formation of flower buds and the occurrence of willow head; from late September to late October, until the flower buds pass through in late October, the height of the plants is basically fixed, and fertilizer and water can be increased. In the second week, the concentration is 30% to 40%, and once a week, 0.1% of potassium dihydrogen phosphate fertilizer is used for foliar dressing, until the flower buds bloom 23-30% and then stop fertilizing. Each fertilization should be done in the evening when the potted soil is slightly dry. After fertilizing, spray the leaves with clean water. Third, the change basin chrysanthemum seedling is smaller at the beginning, when the pot is also correspondingly small, with the growth of the seedlings, the root development is limited, it is timely to put on a larger pot culture, each time to change basins to join the new fertile Culture soil, usually change basin 1 or 2 times, the last time to change the basin to be completed before the end of July. Fourth, repair and management of cultivated chrysanthemums, topping, stripping buds and detaching buds are indispensable tasks. Through topping can promote branching and control height. Picking up the heart should be carried out on a sunny day, and the wounds on the cloudy and rainy days are prone to mildew and rot. The chrysanthemums generally have to be picked 2 to 3 times, and Daliju must be picked 6 to 9 times. The last topping should be no later than mid-August. In the vigorous growth period of the chrysanthemum seedlings, the axillary buds will germinate in large quantities, and the buds that need not to be preserved should be peeled off in time to avoid consumption of nutrients. During budding, many buds will grow at the end buds of the top bud. In addition, chrysanthemums must also be well-prevented in pest control, loose soil, and weeding.