What if a gardenia has buds but does not bloom?
As an aromatic ornamental plant, gardenia often has a closed bud during the bud stage. This phenomenon not only affects the ornamental value, but may also imply maintenance problems with the plants. This article will systematically analyze the underlying reasons why gardenia buds do not open and provide actionable solutions. 1. Scientific fertilization promotes flower bud development 1.1 Hazards of nutrient imbalance Gardenia is a typical fertilizer loving plant, but excessive fertilization will lead to salt accumulation, while lack of fertilizer will cause nutrient deficiency. Balanced fertilizers of nitrogen, phosphorus and potassium should be used during spring germination (recommended ratio of 3:1:2), high-phosphorus potassium fertilizers (such as potassium dihydrogen phosphate) should be used in the first two months of flowering, and alum fertilizer and water should be applied twice a month to supplement iron. 1.2 The precise fertilization plan adopts the principle of "thin fertilizer and frequent application":·Growth period: apply 0.1% compound fertilizer solution every 10 days·Bud period: alternately use 0.2% potassium dihydrogen phosphate and decomposed cake fertilizer water every week·High temperature season: suspend solid fertilizer and switch to foliar spraying 2. Light regulation promotes flower bud differentiation 2.1 Light demand characteristics Gardenia belongs to a neutral light plant and requires 6-8 hours to scatter light every day. 4-6 During the flower bud differentiation period in the month, it is recommended to keep direct light in the morning for 3 hours (before 9 o'clock) and use a sunshade net to filter 50% strong light in the afternoon. Full sunshine can be accepted in winter, and shade needs to be strengthened in summer. 3. Key points of water management 3.1 Humidity balance skills Keep the air humidity at 60-70%, and adopt the "dry and wet" watering method: ·Soil testing: Insert the bamboo stick to a depth of 5cm, and replenish water is needed when it is dry.·Watering rhythm: Spring and autumn 3 days per time, once in the morning and evening in summer, and 7 days per time in winter. Moisturizing skills: 4. Soil environment optimization plan 4.1 Acidic substrate configuration gardenia requires acidic soil with a pH of 5.0-6.5. Recommended substrate formula: peat soil: pine needle soil: perlite =5:3:2 Supplementing sulfur powder once a quarter (0.5g per liter of soil) and irrigating 1000 times ferrous sulfate once a month. Through a four-dimensional maintenance system of nutrition regulation, light management, water balance, and soil improvement, it can effectively solve the problem of not opening the gardenia buds. It is recommended to regularly test the soil EC value (preferably maintained at 0.8-1.2mS/cm) and PH value, and combine with pruning of excessively dense branches (retaining 3-5 main branches) so that each gardenia can bloom perfectly.