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Kalanchoe blossfeldiana, named for its extremely long flowering period, is one of the favorite plants among many flower enthusiasts. To make Kalanchoe blossfeldiana bloom at the optimal time, proper flower - forcing treatment and fertilization management are of crucial importance.
The flower - forcing time of Kalanchoe blossfeldiana mainly focuses on autumn and winter. Specifically, from July to August, Kalanchoe blossfeldiana enters the deciduous dormancy period. During this time, the plant undergoes flower - bud differentiation at the growth points of the dormant stage. Therefore, the best time for flower - forcing is before the arrival of autumn, that is, between September and October. During this period, through measures such as pruning and top - dressing, the flower - bud differentiation of Kalanchoe blossfeldiana can be effectively promoted, preparing for its blooming. In addition, December is another important time point for flower - forcing. Appropriate flower - forcing treatment at this time can ensure that Kalanchoe blossfeldiana blooms in winter or early spring.
It should be noted that the natural flowering period of Kalanchoe blossfeldiana is from January to April each year. However, through proper maintenance and management, its flowering period can be extended to May or even longer. Therefore, when conducting flower - forcing treatment, the flower - forcing strategy should be adjusted flexibly according to the growth habits of Kalanchoe blossfeldiana and the local climate conditions.
Kalanchoe blossfeldiana has a high demand for fertilizers during the flowering period. Reasonable fertilization management is crucial for improving the quality of flowers and prolonging the flowering period. Here are some suggestions for fertilizing Kalanchoe blossfeldiana during the flowering period:
Choose high - phosphorus and potassium fertilizers: Kalanchoe blossfeldiana requires a large amount of phosphorus and potassium fertilizers during the flower - bud differentiation period and the flowering period. Phosphorus and potassium fertilizers can promote flower - bud differentiation, enlarge flower buds, and make the flowers more vivid. Therefore, before and during the flowering of Kalanchoe blossfeldiana, high - phosphorus and potassium fertilizers such as potassium dihydrogen phosphate should be mainly applied. These fertilizers can be applied by foliar spraying or watering the flowers after diluting with water, and the effect is relatively quick.
Regularly apply thin liquid fertilizers: During the flowering period of Kalanchoe blossfeldiana, in addition to applying high - phosphorus and potassium fertilizers, thin liquid fertilizers should also be applied regularly. When choosing liquid fertilizers, the principle of "applying thin fertilizers frequently" should be followed to avoid over - application, which may cause root - burning. Generally, applying thin liquid fertilizers once every 15 days or so is sufficient. This can not only meet the nutritional needs of Kalanchoe blossfeldiana during the flowering period but also avoid damage to the plant caused by excessive fertilizer concentration.
Apply organic fertilizers: Burying an appropriate amount of organic fertilizers in the soil of Kalanchoe blossfeldiana can provide a continuous and stable source of nutrients. Organic fertilizers can slowly release nutrients, meet the long - term nutritional needs of Kalanchoe blossfeldiana, prolong the flowering period, and improve the quality of flowers. Therefore, during the vigorous growth period and the flowering period of Kalanchoe blossfeldiana, an appropriate amount of organic fertilizers can be applied.
The flower - forcing and fertilization management of Kalanchoe blossfeldiana need to be adjusted flexibly according to its growth habits and local climate conditions. Through reasonable flower - forcing treatment and fertilization management, the flower - bud differentiation and blooming of Kalanchoe blossfeldiana can be effectively promoted, its flowering period can be prolonged, and the quality of flowers can be improved.