What's wrong with cactus not blooming?
As a unique desert plant, cactus often makes growers look forward to its flowering process. However, many flower lovers find that carefully maintained cactus never see buds, which is often closely related to the three major maintenance factors: temperature control, light supply, and water management. This article will analyze the key influencing factors from a professional perspective and provide actionable improvement plans. Key skills for temperature control of the core conservation elements of cactus without flowering. The original environment of cactus has a significant temperature difference between day and night, and the ideal growth temperature should be maintained in the range of 20-30℃. During high temperature periods in summer, attention should be paid to shading and ventilation. When the ambient temperature exceeds 38℃, the plants enter a dormant period. At this time, the temperature can be controlled by spraying to cool down or moving to a semi-shaded environment. In winter, it is necessary to ensure a wintering temperature of not less than 5℃, and it is recommended to use thermal insulation film to assist in the northern region. Light intensity and duration management requires at least 6 hours of direct sunlight every day to complete adequate photosynthesis, and ultraviolet light promotes flower bud differentiation. It is recommended to use full-spectrum plant fill light for indoor maintenance. The lamp is kept 30-50cm away from the plant and filled for 4-6 hours a day. Dew cultivation can be carried out in spring and autumn, but it needs to gradually adapt to the strong light environment. The operating guidelines for scientific water control follow the principle of "dry thoroughly and irrigate thoroughly." Water is watered every 15 days in the spring and autumn growing seasons, and the summer hibernation period is extended to 30 days. The bottom-dipping basin method can avoid stagnant water and root rot. The substrate needs to contain more than 50% particulate media to ensure drainage. Strengthen ventilation after watering, and use a small fan to assist air circulation. Nutritional management to promote flowering applies liquid fertilizer mainly composed of phosphorus and potassium fertilizers (N-P-K=5-15-10) every 10 days during the growth period, and additional potassium dihydrogen phosphate solution (concentration 0.2%) is applied during the budding period. Sheep manure is recommended for organic fertilizers, which must be completely decomposed and buried at the edge of the basin soil. Pay attention to the fertilizer not to come into contact with the stem, and water must be poured through the next day after fertilization.
By systematically adjusting the four major elements of temperature, light, water and fertilizer, and regularly changing pots and pruning roots (recommended for a 2-year cycle), most cactus varieties can bloom after 3-5 years of maintenance. Special varieties such as Jinhu require a growth period of more than 10 years, so maintaining patience and continuously optimizing maintenance plans are the key.