First, after normal flowering in early spring, timely removal of the residual pedicel, to promote re-emergence of new branches, strengthen water and fertilizer management, from September to October can be re-flowering.
Second, in early August in the autumn sowing basin, after the defrosting move to 8 °C ~ 10 °C temperature culture, put outdoor leeward sunny day during the day, when the cold on the indoor sunny window sill. About 1 week, pour water 1 times to keep the basin moist, and pour it once a month for compound liquid fertilizer. This will continue to bloom in the winter season.
Third, the end of March or early April live in the courtyard, the seedlings after the appropriate seedlings or transplantation, given a reasonable fertilizer and water conditions, early in June can blossom. Because Chrysanthemum Chrysanthemum needs a relatively long period of low temperature, the growth of spring plants is weaker than that of autumn sowing and the flowers are small.
IV. Autumn sowing in the open season in late August. Control watering at the seedling stage to cultivate strong seedlings. After winter, transplant to cold winter sunny place. When the temperature dropped below 0°C, the grass was covered with cold at night and the straw was removed during the day. When the minimum temperature drops below -7°C, a plastic film is placed under the straw. At this time, only the draught curtain was opened during the day and the film was not opened. However, it should be properly ventilated around noon on sunny days. In the early spring of the following year, when the minimum temperature rises above -7°C, remove the film in time and cover the grass at night. When the minimum temperature rises to 0°C, remove the straw immediately. At this time, proper watering keeps the soil moist, and at the same time chasing a thin pancake fat and water every 15 days or so, so that the “May Day†festival can be opened.
In addition, the Calendula officinalis seeds are first placed in a refrigerator at 0° C. for low temperature treatment for several days, then sown in open field in early August, and flowered in the latter part of September.
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