1、 How to maintain

1. Suitable soil: iris is different from most flowers. It doesn't like acidic soil and prefers alkaline soil. It can provide well drained, loose and breathable soil rich in humus. It also needs to be mixed with a little bone powder or plant ash, which can provide basic fertilizer for plant growth

2. Proper watering: Iris should be watered once after planting. In the later growth stage, it is also necessary to judge whether there is water shortage according to the dry and wet conditions of the soil. Watering should be started after the soil is dry, which can not make the soil ponding and avoid the problem of rotten roots

3. Plenty of sunshine: the environment with plenty of sunshine is conducive to growth. Iris is slightly resistant to shade, but it can grow well under sufficient sunshine. More sunshine can promote the vigorous growth of plants

4. Rational fertilization: when maintaining iris, rational fertilization should be applied, base fertilizer should be applied before planting, and topdressing should be reasonable in later growth. An additional application of fertilizer before autumn and winter can make the plant strong and improve the ability of overwintering

5. Prevention and control of diseases and insect pests: pay attention to ventilation during maintenance. After diseases and insect pests occur, spray drugs for treatment according to specific conditions

2、 Breeding method

Iris propagation is mainly sowing and branching. These two methods are very common, which can be carried out in spring and autumn