Is Dendrobium easy to cultivate?
As a star variety among orchid plants, Dendrobium is highly favored for its elegant株型 and medicinal value. Many新手 gardeners are often daunted by this type of epiphytic plant, considering it too difficult to care for. However, with a grasp of its growth patterns, it is possible to cultivate healthy and lush Dendrobium in a home environment.
Three Key Elements for Dendrobium Growth
Building a Bionic Substrate
Dendrobium roots have typical epiphytic characteristics, and conventional soil cultivation easily leads to root rot. It is recommended to use a mixture of catalpa bark and pine scales (2:1) as the substrate, with particle diameter controlled between 0.5-1.5 cm to retain moisture while ensuring good ventilation. In northern regions, adding 10% volcanic rock can enhance drainage, and replacing the substrate every two years can effectively prevent the growth of pathogens.
Light, Temperature, Water, and Air Control
Keep a 60%-80% shading rate in spring, summer, and autumn, and full sunlight can be accepted in winter. A double-layer shading net can achieve a gradual adjustment of light. Purple spots on the leaves indicate excessive sunlight. Maintain temperatures within the range of 18-28°C, with winter temperatures not lower than 8°C. Use an ultrasonic humidifier to maintain 70% air humidity, and combine it with foliar misting in the morning and evening for better results.
Precise Nutrient Supply
Apply orchid-specific slow-release fertilizer (NPK 20-10-20) from March to June, with 15-20 granules evenly scattered in each pot. Before budding, switch to applying potassium dihydrogen phosphate solution (diluted 1500 times), combined with monthly applications of decomposed sheep manure extract. Note to stop fertilizing during high-temperature seasons and wait for newly planted plants to establish for 3 months before starting to fertilize.
Handling Differences in Cultivation Between North and South
In regions north of the Yangtze River, the pot-in-pot method can be used: place a water-filled pot outside to maintain humidity, and elevate the inner cultivation pot by 3 cm to prevent waterlogging. When moving into a sunroom in winter, a circulation fan is needed to prevent fungal diseases. In the rainy season in the south, a rain shelter should be set up to prevent the substrate from becoming too wet and causing stem rot.
By simulating the native environment and precisely controlling growth parameters, even新手 gardeners can enjoy blooming Dendrobium flowers. This ancient medicinal herb is entering modern households in a new form, adding a touch of natural charm to life.