How to make chrysanthemums blossom all the year round

Chrysanthemums, except summer chrysanthemums, are short-day plants. If chrysanthemums are to bloom all year round, they can form flower buds and bloom as long as they are properly shaded and given less than 10 hours of light every day for 60-70 days in a row. 1. May Day blossoms. Keep 3-5 strong buds of autumn chrysanthemum for indoor maintenance, gradually raise the temperature to more than 20 ℃ after the middle of January, apply appropriate amount of fertilizer, control the amount of water, and shade at the right time. Buds can be formed from late March to early April and blossom in early May. two。 "July 1" blossoms. Shading treatment is carried out in late April, only 8-10 hours of light is given every day, and "July 1" can blossom. The flowering of "August 1" can be postponed for shading treatment in late May. 3. The National Day holiday blossoms. The buds or cuttings were cut in November, the room temperature was kept at about 10 ℃ in winter, the last coring time was in the first ten days of July, shading treatment was carried out in the middle and late ten days of July, and attention was paid to ventilation and cooling. The color was vomited one after another in the middle of September, and it could be in full bloom around the National Day. 4. Spring Festival blossoms. The seedlings were planted in autumn in the middle of August, put on the pot in the middle of September, put into the greenhouse in November, gradually heated to 15-20 ℃ in December, shaded, and could blossom in early February.