People try their best to cultivate flowers, hoping that they will be beautiful in color and appreciated by people. But sometimes the branches and leaves grow vigorously, that is, they don't bloom. Some flowers are very small and light in color: some have become flowers and buds. What is the reason? The summary is as follows: (1) improper water and fertilizer. During the growth period of gardenia, excessive water and fertilizer lead to long branches, and nutrients are mostly used for the growth of vegetative organs (roots, stems and leaves). The lack of nutrition in reproductive organs (flowers or seeds) affects the formation of flower buds, resulting in no flowers or less flowers. Even if it can bloom, it is easy to drop flowers and buds. This phenomenon often occurs in the case of too much nitrogen fertilizer and insufficient phosphorus fertilizer, which will affect the formation of flower buds. Therefore, it is necessary to pay attention to the application of flower fertilizer containing more phosphorus fertilizer or 0.2% potassium dihydrogen phosphate solution during flower bud differentiation, which is beneficial to the formation of flower buds and the pregnancy of buds. Too much fertilization and frequent watering during pregnancy in bud stage can easily lead to flowers falling and buds falling, long-term lack of fertilizer and water for peanuts, poor plant growth, emaciation and short stature, and also easily lead to few or small flowers and poor flower quality. (2) The illumination temperature is not suitable. (Gardenia likes semi-shade in summer and full indoor sunshine in winter) Because of the different origins of flowers, the ecology is different, some like light and some are suitable for semi-shade; Some like warmth, some like coolness, some like warmth and humidity, and some are drought-tolerant. If their living conditions are not satisfied, it is easy to cause falling flowers and falling buds. (3) The soil salt content is high. Gardenia likes slightly sour, but is afraid of salty. Even more saline-alkali tolerant flowers, such as geranium, rose, etc., will affect their growth and flowering when the soil salt content exceeds 0. 1% and the pH value exceeds pH7.5, because the soil has the best nutrient availability and is most suitable for the growth and development of flowers under the slightly acidic strip of pH6-7. Acidic soil not only affects flowering. In severe cases, it will lead to plant death. (4) Year is pruning. If gardenia flowers are not trimmed and reshaped for a long time, the branches will be messy, which will not only affect the appearance, but also affect the formation of flower buds because there are many unnecessary branches, which is one of the reasons for not flowering or flowering less. (5) The room temperature is too high in winter. Gardenia is dormant or semi-dormant in winter, and the suitable room temperature is about 5 degrees. Even if some flowers like warmth, such as Milan and glass dishes, the room temperature should generally not exceed 12℃. Pomegranate, rose, peach, potted grape and fig are suitable for low temperature (about 0℃). If the room temperature is too high, it will affect the full dormancy or premature bud emergence of flowers and trees, consume a lot of nutrients, and the second year will be weak, not flowering or thin and thin, and easy to fall. (6) Pest invasion. Gardenia in the process of growth and development, often vulnerable to pests and diseases, growth is damaged, affecting the accumulation of nutrients, but also a reason for falling flowers and buds. Therefore, if you want your gardenia to grow well and bloom much, you must do it: 1. Choose the right pot soil. 2. Use water scientifically. 3. Rational fertilization. 4. Get more sunshine. 5. Have a good sleep in winter. 6. Change the soil in time. 7. Trim properly.