JasmInum sambac is also known as jasmine. Oleaceae, Jasmine. The leaves are green, white and fragrant. In southern China's gardens, many hedgerows are planted, and the Yangtze River basin area is used for potted viewing, which is the traditional Chinese smoked tea flower. (I) Morphological characteristics Evergreen shrubs, leaves opposite, bright, ovate. Cymes, clustered on the top of the technique, white and fragrant flowers, flowering from June to October. In summer, potted plants rarely grow. Flowers have single and double lobes. (b) The ecological habits are native to the western part of China and India. They are cultivated in tropical and subtropical regions for potted flower viewing and fragrant flower production. Hi warm and humid, the best growth in a well-ventilated, half-negative environment, the soil with fertile slightly acidic sandy loam is the most suitable, intolerant to drought, wet earthworms and alkaline earth. The ability to resist cold is poor. When the temperature is lower than 2C to 3C, the branches and leaves are prone to frost damage. If the temperature is too long, it will die. Therefore, it is particularly important to keep the cold out in winter. After the frost falls, it must be moved into the room for safe wintering. (c) Propagation methods are commonly used for cutting and layering. 1. Cuttage breeding 4 to 10 months, select the mature annual branches, cut and grow 10 cm, remove the lower leaves, inserted in the mud, sand and a half slot, covering the plastic film, maintain a high air humidity. Cuttings usually start with leaves, rooting after two months, the fastest cuttings in summer, the survival rate is high. With proper conservation, it can bloom. 2. The shoots are selected to be longer than 15 cm. They are best cut at the lower part of the section, buried in small pots of mud, often moistened, rooted after 2 to 3 weeks, and cut after 2 months. From seedlings, planted separately. (D) cultivation techniques Cultivation of jasmine, watering is the key, summer and evening watering every day, such as air drying, need to add water, watering at noon is easy to hurt the roots. During the dormancy period in winter, it is necessary to control the amount of water. If the basin is too wet, it will cause rot or defoliation. In severe cases, the whole plant will die. Jasmine is very fertile and hi light. During the growth period, thin and thin water is applied once a week, and fertilization is stopped during the rest period. The cultivation site should choose a sunny courtyard. If the sun is not enough, it is prone to lengthy growth, resulting in leaf thinning, affecting flowers. The jasmine twigs have a strong germination force, and after the spring change basins, it is necessary to take care of the heart. After the flowering period, it is necessary to re-cut and renew, in order to facilitate the emergence of new branches and neat and strong, flowering large and prosperous. The jasmine leaffolder and spider mites are often harmful to the tip of the young leaves, biting into a net-like cavity, affecting growth and appearance.