How to extend the flowering time of daffodils: Second, appropriate top dressing: appropriate dressing can also extend the flowering period. Narcissus after the bud has a greater demand for nutrients, but at this time the nutrients within the bulb remain limited, so the growth should be appropriate fertilizer. From the start of the bud, apply a small amount of potassium dihydrogen phosphate (0.5 grams each time) into the basin every 7 days to 10 days, or a medical glucose injection (2 ml each time) until the flower gratitude. After top-dressing, the plants grow robustly with large buds and flowers, and the flowering period can be extended by 5 days to 7 days. Adding 1/4 tablet of aspirin in a narcissus flowerpot can also prolong the flowering period and delay flower wilting. Third, refrigerated treatment: In the daffodil opening 1 to 2 flowers, the ball can be removed from the pot, packed in a small plastic bag, stored in the refrigerator storage room, removed from the pot after a few days to continue the conservation, Normal flowering. The daffodil head (flower bud) can also be refrigerated. When the first flower of the daffodil is open, the flower bud is cut, inserted into a cup, placed in the refrigerator, and the temperature is maintained at 1°C to 3°C. It can be stored for 2 weeks to 3 weeks. After inserting in the vase, you can still continue to flower.
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First, the temperature control: Narcissus cold afraid of heat, the suitable temperature for the growth period of 8 °C to 12 °C, after flowering requirements are lower. The temperature is low and the flowering period is long, otherwise it is short. The author had made comparative observations. At room temperature above 23°C, the watering narcissus flowering period is one week. At 15°C to 20°C, the flowering period is about 10 days. At 8°C to 12°C, the flowering period is 15 days to 20 day. The daffodils in the homeland should be kept in a sunny, well-ventilated place away from heaters such as heaters and stoves during the growing season. The buds should be moved to a cool place indoors to avoid direct sunlight and keep the temperature balanced. As long as there is a certain low temperature environment, it can effectively extend the flowering period.