Most of the dried flower seeds can be harvested using this method. Dry the seeds, remove other impurities, and put them into a sewn bag of gauze, such as a bunch of red, cockscomb and so on. Do not put in glass bottles or plastic bags, because it is not airtight and affects the breathing of seeds. Seed bags can be hung in a cool, ventilated place. The room temperature can be maintained at 5 °C ~ 10 °C. Sand-seeds can be harvested peony, peony and other seeds, put in the 0 °C ~ 5 °C low-temperature wet sand, such seeds in natural conditions, there is a period of dormancy, mature after dormancy. Take out one month before sowing. Some seeds in the water reservoir should be soaked in water, such as water lilies. The water temperature is generally required to be around 5°C. Below 0°C, the seeds will be affected by freezing injury and budding. All kinds of seeds should not be exposed to sunlight, and should be dried in the shade, otherwise it will affect their germination rate.