How many years have the osmanthus trees bloomed
The fragrance of eight laurels is the most familiar autumn memory for China, but many flower friends find that their osmanthus trees have not bloomed for a long time. As an evergreen tree in the Oleaceae family, the flowering time of osmanthus is closely related to reproduction methods and maintenance methods. If you want the courtyard to be filled with osmanthus fragrance every year, you need to master scientific cultivation techniques. Osmanthus tree flowering time rule reproduction mode determines the flowering period Sowing seedlings need 10 years long growth cycle to flower, this is the seed germination to mature plants must be biological process. Cutting seedlings retain the characteristics of mother plants through asexual propagation, and complete flower buds can be formed in about 4 years. Grafted seedlings were grafted with rootstocks such as tassel tree, flowers could be seen at the earliest in the same year, but the initial flower amount only accounted for 30% of mature plants. Variety characteristics affect flower bud differentiation Sijigui flowers many times throughout the year, but the aroma is weak, Dangui needs more than 5 years of age to flower stably. Jingui and Yingui bloom mostly from September to October in the Yangtze River Basin, but it may be delayed by 2-3 weeks in the northern region due to insufficient accumulated temperature. Key points for flower promotion and maintenance of osmanthus flowers. Light control strategies ensure 6 hours of direct light every day, and can cover 30% shade at noon in summer. Garden planting keeps the canopy spacing of more than 3 meters, and balcony potted plants rotate 180 degrees every half month to ensure uniform light reception. The nutritional management plan applies nitrogen, phosphorus and potassium compound fertilizer (20-20-20) during the germination period in March, uses high-phosphate fertilizer (10-30-20) during the flower bud differentiation period in June, and applies organic fertilizer after flowering in September. Spray 0.2% potassium dihydrogen phosphate solution on leaves every month. Water control technology During the flower bud differentiation period (June to August), the soil moisture is maintained at 40%-50%, and the leaves are slightly wilted and watered thoroughly. Potted plants can use the "dipping pot method" to supply water to avoid hardening of topsoil and affecting root respiration. Special problem solutions Soil pH adjustment Regularly detect soil pH and maintain it within the optimal range of 5.5-6.5. Burial sulfur powder (50g per square meter) or watering ferrous sulfate solution (1:1000) every spring. Pruning and flower promotion techniques Cut off the branches promptly after flowering and keep 2-3 pairs of bud points. Remove inner chamber branches and cross branches to ensure that the ventilation and light transmission rate of the crown is greater than 60%.
Through scientific maintenance and management, even osmanthus trees that are sown and bred can enter full bloom after 8-10 years. Remember the principle of "three points of planting and seven points of feeding" and reasonably control light, warm water and fertilizer, so that the fragrance of osmanthus comes as scheduled year after year.