The reason why gardenia does not bloom when it reaches its flowering stage
The white and fragrant gardenia is the protagonist of summer courtyards, but many flower friends find that the carefully maintained gardenia flowers have not seen buds even after flowering. In fact, there are hidden maintenance misunderstandings behind this. As long as the crux is identified and targeted measures are taken, the gardenia can bloom charming and fragrant as scheduled. 1. Nutritional imbalance affects flower bud differentiation 1.1 Typical manifestations of improper fertilization The imbalance of nitrogen, phosphorus and potassium ratio is a common problem. Excessive nitrogen fertilizer causes branches and leaves to grow wildly, causing plants to use 90% of their nutrients for stem and leaf growth. It is recommended to use balanced fertilizers of nitrogen, phosphorus and potassium (15-15-15) during spring germination and use high-phosphorus and potassium fertilizers (10-30-20) before budding. 1.2 Key points for trace element supplementation: Supplement foliar fertilizers containing iron and magnesium every month to prevent yellow leaf disease. The iron chelate can be diluted 2000 times and sprayed on the back of the leaves in the morning. 2. The key to soil environmental regulation 2.1 Precise control of pH value Gardenia requires acidic soil with a pH value of 5.0-6.5. It can be detected with pH test paper. If it is too alkaline, you can irrigate 1:1000 ferrous sulfate solution every month or bury it in pine needle soil for improvement. 2.2 The recommended formula for the substrate ratio optimization plan is: 4 parts of humus soil +3 parts of peat soil +2 parts of perlite +1 part of decomposed pine bark to ensure optimal water permeability. 3. Coordinated management of light and moisture 3.1 The golden light duration needs to ensure 4-6 hours of scattered light every day to avoid noon burns. It can be adjusted by installing a sunshade net to maintain the light intensity at 15,000 - 25,000 lux. 3.2 The scientific watering strategy adopts the "see dry, see wet" method, and water thoroughly when 2cm of topsoil is dry. In summer, it can be matched with ceramsite paving to reduce water evaporation. It is best to maintain the air humidity at 60%-70%. 4. Shape pruning promotes flowering 4.1 Select pruning timing to prune residual flowers immediately after flowering, retaining 2-3 pairs of leaves. In winter, shaping and pruning is carried out to remove cross branches and sick and weak branches, so that the ventilation and light transmission rate of the plant can be increased by more than 40%. 4.2 Flower-inducing and pruning techniques are used to pick long branches to promote lateral branch differentiation. Each pruning can increase the probability of flower bud formation by 15%, but it needs to be supplemented with phosphorus and potassium fertilizers.
By accurately controlling these five factors and regularly observing plant conditions, even novices can make gardenia bloom every year. It is recommended to establish a maintenance log to record data such as fertilization and watering, and gradually grasp the rules of plant growth.