1、 Breeding method

1. Soil: Twelve rolls have shallow roots and do not need very deep and thick soil. You can choose loose nutrient soil to plant

2. Light: it is necessary to strictly control the light on the plants. When the light is strong in summer, shade appropriately to prevent the plants from being burned by strong light. In winter, place the plant in a place with sufficient light to allow the plant to receive the necessary light

3. Temperature: the requirements for temperature are not strict. It is afraid of cold. It should be placed in a place with sufficient light in winter

4. Watering: when watering the plant, if it is not watered well, it will lead to rotten roots, leaf atrophy and other symptoms. Keep the soil moist during the growth period. Winter and midsummer belong to semi dormant period, and the basin soil is dry

5. Fertilization: twelve volumes do not like fertilizer and have little requirements on the amount of fertilizer. It only needs to be applied once or twice a year. Excessive application is very easy to cause fertilizer damage and burn its roots

2、 Precautions

When black spot occurs in twelve rolls, the leaves will produce black and green spots in the form of water stains. It can be treated by spraying 50% thiophanate methyl sulfur suspension 600 times, 36% thiophanate methyl suspension 500 times and 27% alkaline suspension at the initial stage of the disease