What to do if orchid introduction seedlings are weak
As an elegant ornamental plant, orchids are directly related to the success or failure of cultivation. Many Lanyou often encounter problems such as thin seedlings and stagnant growth when introducing new plants. Mastering scientific rejuvenation methods can quickly restore vitality and regain its elegant posture. Three key points for the rejuvenation of orchid introduced seedlings should be carefully observed before introducing healthy seedlings: select strong seedlings with more than 3 old reed heads and full false bulbs. The root system of high-quality seedlings should be milky white, without black rot spots, and the leaf sheaths should be complete without mechanical damage. Avoid introducing plants with brown stripes or water-stained patches on their leaves, which may be signs of viral infection. Scientific plant ratio It is recommended to adopt a layered structure for special rejuvenation plants: use chestnut shell + volcanic stone (3:1) at the bottom to enhance drainage, use fermented pine bark (particle size 1- 2 cm) to provide nutrients in the middle layer, and cover the surface with moss to moisturize. The pH value of plant materials should be stable between 5.5 and 6.5, and the Cymbidium culture solution should be supplemented quarterly to promote the reproduction of symbiotic bacteria. Precise environmental control and weak seedling maintenance require the construction of a microclimate environment: maintain the temperature difference between day and night of 8-10℃, and 25℃ during the day/17℃ at night is the best. The light intensity is controlled at 8000-12000lux, and a double sunshade net can be used to filter strong light. The air humidity is maintained at 60%-70%, and it is combined with the circulation ventilation system once an hour to avoid soft rot caused by high temperatures and high humidity. The key points for the rejuvenation and rejuvenation of weak orchid seedlings adopt the "three controls and one supplement" maintenance method: control water (keep the moisture content of the plant material at 30%), control fertilizer (no fertilization in the first 3 months), control temperature (avoid severe fluctuations), and supplement EM bacteria solution (spray 1:1000 dilution on the leaves every month). Pay special attention to the protection of new buds. When the buds grow to 3cm, gently wipe the buds with a sterile cotton swab to prevent pests.
After 3-6 months of careful maintenance, the false bulbs of weak seedlings will expand significantly, new roots will grow crystal heads, and the leaves will appear oily and shiny. At this time, you can gradually switch to regular management, and you can enjoy the long-awaited orchid bloom the next year.