How to Care for Phalaenopsis Orchids at Home
Known as the 'Queen of Foreign Orchids,' Phalaenopsis orchids have become a new favorite in home greenery due to their elegant flower posture. However, many orchid enthusiasts often face the problem of plants growing excessively without producing flower spikes. This article systematically analyzes the entire process of home care from substrate proportion to light and temperature control, helping you easily solve the problem of non-flowering.
Part I: Scientific Care Guide for Phalaenopsis Orchids at Home
1. Key Techniques for Substrate Soil Mixture
As an epiphytic orchid, it is recommended to use a golden ratio of bark (40%) + sphagnum moss (30%) + ceramsite (20%) + perlite (10%). This structure not only ensures breathability but also maintains necessary humidity. You can spray a special orchid nutrient solution once a week to promote root development.
2. Precise Watering Operation Specifications
In spring and autumn, soak the pot for 10 minutes every 5-7 days, in summer reduce to 3-5 days (avoiding noon), and in winter extend to 10-15 days. Pay attention to the condition of the sphagnum moss, water when the surface is slightly dry, and the whitening of roots is a signal of water shortage, while green roots do not need watering.
3. Smart Temperature Control Environment
Maintain a day-night temperature difference of 5-8°C for the best results, with 25-28°C during the day to promote photosynthesis and 18-20°C at night for nutrient accumulation. In winter, use a heating mat to maintain a temperature above 15°C to avoid low-temperature dormancy.
4. Advanced Lighting Management Plan
Use a combination of an east-facing windowsill and a shading net to ensure a daily light intensity of 15,000-20,000Lux. Use 50% shading net in summer and 30% light transmission in winter. Rotate the pot 45 degrees monthly to ensure a symmetrical plant shape.
Part II: Systematic Plan for Inducing Flower Spikes in Phalaenopsis Orchids
1. Light Cycle Regulation Method
Starting in autumn, provide a dark environment for 12 hours a day for 45 days to induce flower bud differentiation. Use black non-woven fabric for coverage but maintain ventilation.
2. Nutrient Regulation Strategy
Use a balanced fertilizer with N-P-K=20-20-20 during the growing period and switch to a high-phosphorus and potassium formula of 7-11-27 before budding. Supplement with trace element fertilizers containing boron and molybdenum, and spray once a week on the leaves.
3. Physical Flower Promotion Techniques
Apply temperature difference stimulation to mature plants: 28°C during the day and 18°C at night for 3 weeks, combined with water control (reducing the moisture content of the substrate to 30%), which can significantly increase the rate of flower spike germination.
By systematically implementing the above care plan, more than 90% of the plants can bloom normally in the following year of care. It is recommended to establish a care log, record temperature and humidity and fertilization data, and gradually form a personalized care system. Regularly check the status of aerial roots, replace the old substrate in time, and allow the Phalaenopsis orchids to bloom elegant flower spikes every year.