Why does Jasmine not bloom?
The white and fragrant jasmine flowers are very popular among gardening enthusiasts, but many flower friends often encounter the problem of lush branches and leaves but not seeing the buds. Based on field research and botanical theory, this paper systematically analyzes the four key factors affecting Jasmine flowering and provides actionable solutions. 1. Imbalance of nutrient supply affects flower bud differentiation 1.1 The root cause of nutrient deficiency Jasmine needs to consume a large amount of phosphorus and potassium from bud pregnancy to bloom. If high nitrogen fertilizer continues to be applied, the branches and leaves will grow out. Plants will preferentially allocate nutrients to new leaves, causing interruption of flower bud development. 1.2 The scientific fertilization plan recommends adopting the principle of "thin fertilizer and frequent application":·Growth period from March to May: apply balanced nitrogen, phosphorus and potassium fertilizers for half a month (15 - 15 - 15). Flowering period from June to August: supplement phosphorus and potassium fertilizers every week (10 - 30 - 20)·Cooperate with foliar spraying of 0.2% potassium dihydrogen phosphate solution 2. Double standards of light intensity and duration 2.1 Effect of photoperiod on flowering A typical positive plant of Jasmine requires 6 hours of direct light per day. Experimental data shows that when the light intensity is lower than 30000 lux, the flower bud differentiation rate drops by 60%. 2.2 Light management in different seasons Full sunshine maintenance in spring and autumn, moderate shade in summer from 10:00 to 15:00, and direct light for 5 hours in winter. Plant fill light (wavelength 640 - 660 nm) is recommended in northern regions. 3. Time code of pruning technology 3.1 The adjustment of branch structure focuses on pruning inner branches, cross branches and pest branches to keep the crown transparent. Each main branch retains 3 - 4 strong lateral branches, forming a "tertiary branch" structure. 3.2 Post-flowering pruning, golden period, heavy pruning is carried out within 7 days after flowering, retaining 2 - 3 pairs of leaves at the base of the branch. Pruning at this time can stimulate the germination of new branches and ensure secondary flowering after 45 days. 4. Dynamic control system of soil environment 4.1 Precise control of pH value Use a pH detector to monitor regularly to maintain a slightly acidic environment of 5.5 - 6.5. When pH> 7, add 2 ml of citric acid solution per liter of water for irrigation. 4.2 The recommended formula for the substrate improvement plan is: 40% legus soil +30% pine needle soil +20% perlite +10% sulfur powder. Add 5% decomposed sheep manure to improve the structure when changing pots every spring.
Through systematic maintenance in four dimensions: precise nutrient management, light cycle control, scientific pruning system and soil dynamic adjustment, the amount of jasmine flowers can be increased by 3 - 5 times. It is recommended to establish a maintenance log to record the date of each fertilization, pruning and plant response, and gradually form a personalized maintenance plan.