I am well acquainted with the characteristics of these flowers. They can be propagated not only by cuttings but also by seeds. In their first year, a plant can produce up to 80 buds, and in the following year, over 800. The flowers can last in water for 30 to 35 days.
Korean chrysanthemums can withstand frost down to 10 degrees Fahrenheit, and then continue to bloom as temperatures rise. Their roots remain unharmed even in winter temperatures of minus 20 to 25 degrees Fahrenheit. They do not require special coverings and thrive well under snow. You can also regulate the blooming period of these flowers to coincide with birthdays, name days, or anniversaries.
Observing the development of chrysanthemums, I concluded that it takes about 3 to 3.5 months from seed sowing to flowering, 35 to 40 days from cuttings to flowering, and 40 to 50 days from dividing the rhizomes to flowering. Therefore, to have Korean chrysanthemums bloom by May 1st, you should sow them in February and take cuttings at the end of March. However, I want to remind you that these timelines depend on air temperature and the varieties (early, mid-season, and late).
Korean chrysanthemums are still relatively rare in our country.