What is the reason why gardenia buds fall?
Gardenia smells fragrant in midsummer, but the problem of flower buds falling off often troubles flower friends. As a typical acidophilic plant, gardenia has strict requirements on the growth environment. This paper will systematically analyze the causes and solutions of flower bud shedding from three dimensions: water management, nutrient supply, and root maintenance. Water imbalance causes buds to fall and over-watering. Gardenia has a fibrous structure. If water accumulates for more than 12 hours, root rot will occur. Data shows that 70% of potted gardenia buds fall are related to improper watering. It is recommended to maintain the soil moisture at 40%-60%, which can be detected by the bamboo stick insertion method: it is suitable if the bamboo stick has unearthed grains but no mud. The scientific water replenishment plan adopts dual water replenishment of "immersion basin + spray": immerse the flower pot in the water basin for 2 minutes every week, and combine it with leaf spray in the morning and evening. When the leaves are found to droop, 3-5 hollow wheat stalks can be inserted to promote deep ventilation. Avoid direct flood irrigation. Nutritional imbalance leads to the consequences of excessive fertilization when buds fall. Application of nitrogen fertilizer during the flower bud stage will stimulate the growth of new leaves and cause a reversal of reproductive growth. Experiments show that when the soil EC value exceeds 1.5mS/cm, the bud falling rate increases by 35%. It is recommended to use potassium dihydrogen phosphate (concentration 0.2%) for foliar topdressing, no more than twice a month. Substrate improvement techniques When changing pots, mix legus soil, coarse river sand and pine needle soil in a ratio of 4:3:3, and lay a 5-cm ceramsite drainage layer on the bottom layer. Add sulfur powder to adjust the pH to 5.0-6.0, and add 1g of slow-release fertilizer per liter of soil to ensure continuous fertilizer supply. Root damage treatment plan Emergency treatment after pruning damaged plants should immediately cut off 1/3 of the branches and leaves, and soak the roots with ABT rooting powder (200ppm) for 20 minutes. Put it in a transparent plastic bag to maintain humidity after being placed in the pot, and place it in a scattered light place to slow down the seedlings for 15 days, with ventilation for 1 hour every 3 days. It is recommended to use a purple sand basin with strong air permeability, with a basin diameter 10-15cm smaller than the crown width. Maintain direct light for 4 hours a day in spring and autumn, and 50% of the sun needs to be shaded in summer. Regularly rotate the flowerpot to ensure uniform light reception and prevent unbalanced nutrient distribution caused by partial crown.
Through scientific water and fertilizer management and meticulous root maintenance, the problem of gardenia buds falling can be effectively prevented. It is recommended that flower lovers establish a maintenance log to record watering time, fertilization types and plant reactions, and gradually master the growth rules of gardenia so that flowers as white as jade can always bloom unsuccessfully.