How to cultivate dendrobium
As a star variety among orchid plants, Dendrobium is favored for its unique medicinal value and ornamental properties. This article will systematically analyze the key points of Dendrobium cultivation, focus on protective strategies in cold seasons, and help flower lovers achieve healthy breeding throughout the year. The four-element substrate preparation and container selection of Dendrobium scientific breeding adopt a layered substrate structure: 3cm broken bricks are laid at the bottom to enhance drainage, the middle layer is filled with fermented pine bark (particle size 1 - 2cm) to maintain ventilation, and the surface layer is covered with moss to moisturize. It is recommended to use pottery pots or hollow plastic baskets to ensure that the air circulation rate of the roots is greater than 30%. The refined management of water and fertilizer implements the rule of "three sprays and two irrigation": leaf spray is carried out every morning and evening, and the high temperature period is suspended at noon; substrate thorough irrigation is carried out every Tuesday and Friday. Orchid special fertilizer (N-P-K = 20 - 20 - 20) diluent is applied every month during the growth period, and phosphorus and potassium fertilizers are used to enhance cold resistance in winter. Intelligent lighting control plan builds a dual-layer sunshade system: use 30% sunshade net in spring and autumn, and upgrade to 50 - 70% sunshade net in summer. The intelligent light filling system automatically turns on continuous rainy days to maintain a light intensity of 5,000 - 8,000 Lux. A three-level protection mechanism has been established for monitoring the temperature critical point of Dendrobium's outdoor wintering protection system: start the installation of wind shields at 5 ℃, start the heating cables at 0 ℃, and must be moved indoors at-5 ℃. It is recommended to build a "three-piece thermal insulation set" around the flowerpot-perlite thermal insulation layer, plastic film moisture-proof layer, and nonwoven fabric breathable layer. Micro-environment optimization techniques use ultrasonic humidifier to maintain air humidity at 65 ± 5%, and use temperature and humidity meter to monitor in real time. Build a sloping rainproof canopy in rainy and snowy days to avoid stagnant water while ensuring ventilation. Spray EM bacterial solution every half month to prevent low-temperature diseases.
Through scientific breeding management and systematic overwintering protection, Dendrobium can fully achieve safe overwintering outdoors. It is recommended to establish a year-round maintenance calendar based on local climate characteristics so that this "Chinese fairy grass" can shine in your courtyard.