What if the jasmine doesn't bloom?
The white and fragrant jasmine flowers are a favorite for many flower lovers, but when the plants fail to see the buds, the caregivers are often anxious. Aiming at the common problem of jasmine not blooming, this article systematically sorts out six key maintenance elements, and helps you crack the blooming code through scientific analysis and practical skills. 1. Scientific fertilization techniques 1.1 The mechanism of nutrient deficiency affects Jasmine flower bud differentiation requires sufficient phosphorus and potassium reserves. If high nitrogen fertilizer continues to be used during the bud pregnancy period, it will cause the branches and leaves to grow and inhibit flower bud formation. Data shows that when the imbalance between nitrogen, phosphorus and potassium in the soil exceeds 3:1:2, the flowering rate will drop by 60%. 1.2 The precise fertilization plan recommends adopting the "three-stage fertilization method": use nitrogen, phosphorus and potassium balanced fertilizers (20-20-20) during the growth period (March to April), and use high-phosphorus potassium fertilizers (10-30-20) during the bud pregnancy period (May to June), and supplement potassium dihydrogen phosphate solution (1:1000) every 10 days during the full flowering period. 2. Light energy conversion management 2.1 Light intensity requirements Jasmine is a typical solar plant and requires more than 6 hours of direct light per day. Experiments have shown that when the light intensity is lower than 30000 lux, the accumulation of plant photosynthetics is insufficient and it is difficult to support flower bud development. 2.2 The light cycle control adopts the principle of "morning light first": soft light from sunrise to 10 o'clock is most conducive to flower bud differentiation, and 30% of the strong light needs to be blocked at noon. In the northern region, light needs to be replenished for 4 hours in winter, and full-spectrum plant lights are used to illuminate 40cm away from the leaves. 3. Soil environment regulation 3.1 Precise adjustment of pH value The optimal soil pH value for jasmine is 5.5-6.5. When pH>7, the availability of iron decreases, resulting in no flowers on yellow leaves. pH paper can be tested monthly and adjusted by watering citric acid solution (1:1500) or embedding sulfur powder (0.5g per liter of soil). 3.2 The recommended ratio for the substrate improvement plan is: 40% legular soil +30% pine needle soil +20% perlite +10% bone meal. When changing pots every spring, 5% decomposed sheep manure is added as base fertilizer, which can not only acidify the soil but also continuously supply fertilizer. 4. Assisted flowering promotion measures 4.1 Pruning and flowering promotion techniques Shorten the branches in time after flowering and retain 2-3 pairs of leaf nodes. Picking the long branches in mid-May and combining with 75% shading treatment for 20 days can stimulate the differentiation of axillary buds and flower buds. 4.2 Accurately control water and implement "alternate dry and wet" management during the flower bud differentiation period: After 3 cm of topsoil is dry and then watered thoroughly, combined with foliar spraying of 0.1% boric acid solution, the flowering quantity can be increased by more than 35%.
By systematically regulating the three core elements of nutrient supply, light energy conversion, and soil environment, coupled with scientific pruning and water management, even novice flower lovers can make jasmine blossom every year. It is recommended to establish a maintenance log to record the time of each fertilization and pruning, and gradually master the growth laws of the plant to make the jasmine bloom more in line with the natural rhythm.