1、 Seed treatment

1. Not all seeds can germinate, only single petal seeds can be sown. Because the seed coat of this plant is very thick, it is not easy to germinate, and the thick seed coat blocks the entry of water. Treat the seeds before planting

2. The time for seed treatment is about May and June, so it can be planted in the coming year

3. Choose a highland with smooth drainage and dig a pit one meter two to one meter five deep with a diameter of one meter. 4. Prepare a basin of warm water with a temperature of about 65 ℃, soak the seeds for one hour, remove them and sterilize them with potassium permanganate for two hours. Wash with clean water after fishing out

5. Wet the sand and fill 20 cm at the bottom of the pit. The river sand is sterilized and mixed with seeds. One seed is mixed with three sand without water

6. One morning (the temperature is relatively low), pour the mixture of seeds and sand into the pit. When it is about 25 cm away from the big pit mouth, cover it with sand. The sand on the top layer is almost flush with the big pit. Several ventilation devices should be inserted into the big pit and covered with straw mats

7. Add 20 cm of broken weeds on the mat. Dig drainage ditches around the pit to prevent ponding caused by rain, watering, etc

8. After the storage bunker is ready, you can wait for spring to come and the seeds will sprout. During this period, we should not be idle. We should often measure the temperature and humidity. If the temperature rises too fast, it depends on whether the seeds are moldy. If there is no special situation, 30% of the seeds will crack in the coming year. Before sowing, take out the seeds and sow

2、 Sowing method

1. Select a fertile sandy soil with good drainage to the sun, turn the soil to loosen the soil, trim the garden and sterilize it after fertilization

2. Spring sowing is generally carried out in April. The temperature rises. The land is watered and supplied with water a few days ago. When the water is half dry and soft, put seeds and cover the soil by 1 cm. You can press the soil surface slightly, control the water, fertilizer and temperature, and wait for the emergence of seedlings