1、 Curing method

1. Substrate selection: its cultivation substrate can be fertile and loose sandy soil with more humus and good drainage and air permeability. If the soil is too poor, it is necessary to add an appropriate amount of base fertilizer to the soil, which is conducive to its growth

2. Nutrient management: it needs topdressing two to three times during its growth period. Nitrogen fertilizer can be mainly applied at the initial stage of growth. It is best to topdressing an appropriate amount of phosphorus fertilizer or potassium fertilizer before heading and flowering, combined with weeding to avoid weeds consuming plant nutrients

3. Water and humidity should be kept cool in the dry environment in summer, and watering should be done properly in the dry environment

4. Temperature management: it grows well in the normal room temperature environment and is relatively cold resistant. The overwintering temperature should be maintained above 4 ℃. If the natural temperature is lower than 3 ℃, thermal and cold protection measures should be taken in time, and it should be moved to a greenhouse that can fully accept light for overwintering

2、 Breeding skills

1. Propagation method: there are two methods for its propagation: sowing and plant division. The plant division method is mainly used. The plant division method is best carried out from September to October. After removing the yellow and withered old leaves of the plant, it can be divided into small plants with five to ten tillers, which can be watered appropriately after transplanting

2. Method of changing pots: when the plant grows luxuriantly and the foliage has filled the flowerpot, in order to make it grow better, the flowerpot can be changed in spring, and the flowerpot with appropriate caliber can be selected. When changing the flowerpot, it can be combined with pruning and an appropriate amount of base fertilizer can be added

3、 Problem diagnosis and treatment

1. Yellowing of leaves: it likes water, but if the container used for cultivation has no bottom hole or the soil drainage is poor, it is easy to cause excessive water logging in the basin, resulting in yellowing or even withering of plant leaves. It is usually necessary to pay attention to timely drainage

2. Insect pest: its insect pest is mainly rice locust, which will harm the leaves of the plant. Once found, it is necessary to spray insecticide in time according to the instructions

4、 Other issues

1. Moral: its stems and leaves have a special spicy aroma. Traditional Chinese medicine believes that it can dispel filth and ward off evil spirits. At the same time, its leaves are sword shaped. People call it "Pujian" which can cut off evil spirits, and its moral is "cut off thousands of evil spirits"

2. Toxicity: it has no toxicity and can be used as medicine. It has warm nature and pungent taste. It has the effects of removing dampness, appetizing, promoting blood circulation and dispersing wind