Dahlia seeds and ball dahlia plants of the genus, Compositae,

‌ Sowing time and method ‌ : Dahlia seeds are generally collected in autumn and sown in February-March of the following year. After sowing, the daytime temperature should be controlled at 15-20 ° C, and the night temperature should not be lower than 12 ° C. Spring planting should be done after the temperature has stabilized, and autumn planting should ensure that the plants have enough time to grow before the frost