How to raise dendrobium orchids
As a star variety among orchid plants, Dendrobium is favored by gardening enthusiasts for its elegant flower appearance and medicinal value. But for this tropical orchid to continue to bloom in the home environment, scientific and systematic conservation methods are needed. This article will provide you with a detailed analysis of the five core maintenance points from environmental control to daily management. Three elements of environmental control Scientifically control light conditions Dendrobium is a typical epiphytic orchid, and its original environment is a humid area shaded by shade. It is recommended to adopt the "three-season sunshade method": 30% shading (10:00-15:00) in spring, 70% of strong light in summer, and 50% scattered light in autumn. Full sunshine can be accepted in winter, but attention should be paid to the ultraviolet filtering effect of glass windows. Accurately controlling temperature and humidity has typical tropical plant characteristics, and it is recommended to adopt "golden temperature zone" management: during the growth period (March to October), the daily temperature is maintained at 25-32℃/night temperature is 18-22℃, and during the winter dormant period, it is maintained at 12-15℃. It can be monitored in real time by a smart temperature and humidity meter and cooperated with a humidifier to stabilize the air humidity within the range of 60-75%. It is recommended to adopt the "three-level ventilation method" for the construction of the air circulation system: basic layer-windows are opened for 2 hours every day to form air convection; strengthened layer-installing circulation fans (low-speed gear); emergency layer-used in conjunction with dehumidifiers in rainy seasons. Pay special attention to placing flower pots more than 15cm away from the wall to avoid forming dead corners for ventilation. The dual-core intelligent watering plan for daily management adopts the "tactile watering method": soak in the basin for 15 minutes in spring and autumn when the surface of the moss is white; in summer, use the "morning and dusk double watering method"(foliar spray at 6:00, substrate watering at 18:00); In winter, it is changed to single watering at noon. It is recommended to use soft water with an EC value of <0.3 and rinse the substrate salt with rainwater once a month. The nutrient supply strategy implements the "3+2 fertilization method": 2000 times liquid fertilizer (N-P-K=20-20-20) three times a month during the growth period, combined with seaweed essence twice; use high-phosphate fertilizer during the bud period (10-30-20); Stop fertilization during the dormant period but spray calcium and magnesium once a month. Pay special attention to washing the leaf cores with clear water after fertilization. After managing flowers during special periods, residual flower stalks should be cut off in time and 3-4 sections should be reserved to promote secondary flowering. The pots are changed in the spring every two years, and a new substrate with tree bark: water moss: charcoal =5:3:2 is used, and 1/3 of the original substrate is retained during operation to protect the symbiotic flora. In summer, we need to focus on preventing and controlling red spiders. You can wipe the back of the leaves with azedra oil every week.
Through systematic environmental control and refined management, even novices can make Dendrobium bloom 2-3 times a year. It is recommended to establish a maintenance log to record the data of each watering and fertilization, and gradually form a personalized maintenance plan. When the germination rate of new buds in the plant reaches more than 80%, it means that your maintenance method has fully met the growth needs of dendrobium.