What should I do if the gardenia only grows buds and does not bloom?
Every spring and summer at JIAOTI, green gardenia branches are covered with buds but do not bloom, which has become a worry for many flower friends. This phenomenon not only affects the ornamental value, but also suggests that there are hidden dangers to plant growth. This article will systematically analyze the underlying reasons and scientific solutions for gardenia's "only buds but not flowers" from environmental control to maintenance skills. Key points for the maintenance of gardenia buds that do not bloom Flowering Judgment and Growth Cycle Understanding The natural flowering period of gardenia is concentrated from June to August, and there is a fluctuation period of ±20 days due to the influence of regional climate. By observing the development status of the flower buds: the young green buds need to continue to be maintained, and the expanded and white buds will enter the flowering stage. Manual intervention is required if there is no opening for 3 weeks. A typical manifestation of nutritional imbalance is the imbalance in the ratio of nitrogen, phosphorus and potassium. Starting from April, high-phosphorus and potassium liquid fertilizers (N-P-K=5-10-10) should be used, and irrigated with 2000 times water every 15 days. The combination formula of potassium dihydrogen phosphate + decomposed peel water is particularly recommended, which can not only promote flowers but also maintain soil acidity. The five major solutions comprehensively analyze light intensity and accurately control spring to ensure scattered light for 4-6 hours a day. Starting from May, sunshade nets will be used to filter 30% of strong light. The east-facing balcony or shade environment is the best to avoid burning flowers caused by direct exposure at noon. The golden rule of water management implements the "see dry and wet" watering method during the bud emergence period, and waits until the top 3 cm of soil is dry before watering thoroughly. A bamboo stick can be inserted to detect humidity, and the sprayer can be used to replenish water on the leaves in the morning and evening to maintain the air humidity of 65%-75%. Key technologies for soil improvement use pH test paper to test soil every month to maintain a weak acidity of 5.0-6.5. Regularly water 0.2% ferrous sulfate solution, or bury organic matter such as pine needles and coffee grounds. It is recommended to change pots and soil every year in alkaline areas. Correct posture for pruning and promoting flowers cut off residual flowers in time after flowering, and cut off excessively dense branches to retain 3-5 main branches. Pay attention to retaining 2-3 pairs of leaves at the base and apply plant ash to the incision to prevent infection. Topdressing seaweed fertilizer after pruning promotes new bud differentiation. In addition to basic measures, details such as temperature difference control between day and night (difference of 8-10℃), selection of basin material (the best veg-fired pottery pots), and prevention of pests and diseases (regular spraying of neem oil) cannot be ignored. It is recommended to establish a maintenance log to record data such as temperature, humidity, and fertilization frequency.
Through systematic adjustment of the maintenance plan, 90% of gardenia flowers can be opened one after another within 15 days. In case of special circumstances, you can use the warm water immersion basin method (soak in warm water at 35℃ for 10 minutes) to urge flowers for emergency purposes. Remember that patient observation and scientific management are the key to raising gardenia well.