How to grow clivia so it blooms earlier? These methods are very practical
Under conventional cultivation, clivia generally has a vegetative growth period (juvenile stage) of about 4 to 5 years before it can bloom. To shorten its juvenile stage and make it bloom earlier, the following points should be followed:
Prepare the growing medium: The potting soil for clivia must be fertile, loose, rich in organic matter, with good aeration and drainage, and with comprehensive and adequate nutrients. The mixing ratio is: 20% coniferous soil, 20% garden soil, 20% compost, 20% cake residue, 20% river sand. Insist on repotting and changing the soil once a year, which can ensure an adequate nutrient supply and promote early and rapid leaf growth.
Control nitrogen and increase phosphorus and potassium fertilizer: On the basis of preparing the growing medium well, apply topdressing scientifically and prevent excessive nitrogen application. Too much nitrogen will cause excessive vegetative growth, making it difficult to bloom. When the leaves reach more than 10, control nitrogen and increase phosphorus and potassium fertilizer, such as monopotassium phosphate and plant ash, to promote robust leaves and earlier blooming.
Adjust lighting: To adjust the lighting for clivia, achieve "avoid strong light in summer, let light through in spring and autumn, and provide long light in winter." In the hot summer, place the flowerpot in a cool, ventilated place to prevent sunburn. From the beginning of October, gradually increase light exposure. By winter, move it to a bright spot indoors. Note that in autumn and winter, provide at least 4 hours of light per day and keep the temperature between 10°C and 20°C. Adjusting light and temperature can accelerate the plant's transition from vegetative growth to reproductive growth and make it bloom earlier.
Low-temperature treatment: In winter, clivia should not be brought indoors too early. It should first be hardened outdoors at 5°C for more than 10 days, with controlled water and fertilizer, but be careful of frost. After bringing it indoors, maintain an indoor temperature of 10°C to 20°C, and at the same time strengthen fertilizer and water management. In this way, it can send up flower stalks in late winter and early spring. It can also be treated by adjusting the temperature in a greenhouse to promote flower bud differentiation and earlier blooming.
Increase light to force blooming: On the basis of strengthening fertilizer and water regulation, adopt variable temperature and increased light treatment. Keep the temperature at 15°C to 18°C during the day and 8°C to 10°C at night, with 10 hours of light per day. With this temperature and light treatment, flower stalks and buds can appear in about 30 days, and it can bloom in about 50 days. When flower stalks appear in the leaf axils, adjust the temperature to 25°C to 30°C and accordingly increase the supply of fertilizer and water, which can improve the quality of blooming.