1、 How

1. Choose seeds: choose plump, healthy, mature seeds, not shriveled or damaged seeds. Then soak the seeds in sodium chloride solution for 3-5 minutes and dry them

2. Seed germination: soak the dried seeds in water with a temperature of about 40 ℃ for 4-6 hours. When the water is cooled, continue to add warm water and keep the water temperature at about 40 degrees. Then put the seeds in the wet sand to keep the sand moist. The degree of sand moist can be pinched into a ball by hand. The seeds will germinate in about a month

3. Planting soil: loose and breathable soil with good water retention shall be selected. The soil mixed with peat soil, water moss and perlite can be used as planting soil. After the soil is prepared, it needs steam disinfection to kill the bacteria in the soil, and then loosen the soil more. Finally, an appropriate amount of farm manure can be added

4. Colonization: plant the germinated seedlings into the soil, and the depth of seeds into the soil is about 4-5cm. After planting, it should be watered once, and then put it in a sunny place for maintenance. After planting, keep the soil moist, but don't let ponding appear in the basin. Generally, seedlings can emerge in about two weeks

2、 When

Roses are usually planted in spring and autumn. Spring is most suitable for planting roses. The growth state of plants will be relatively good and the survival rate will be relatively high. They can bloom from May to June. When sowing in autumn, you need to be ready for overwintering. Moreover, the temperature is low, and the seeds may not germinate until after winter