Can I cut the tips of black orchid leaves with yellow?
As a famous national orchid product, the problem of yellowing leaf tips of Cymbidium has troubled many orchid lovers. This not only affects the ornamental value, but may also imply a health hazard to the plant. For this common symptom, scientific pruning and precise maintenance are particularly important. Correct operation for pruning yellow leaves of Cymbidium japonica. Selection of pruning timing When the yellowing area of the leaf tip does not exceed 1/3 of the leaf, it is recommended to prune immediately. The best operation period is early morning or evening, when plant transpiration is weak. Use alcohol-disinfected scissors, cut at a 45° angle, and the incision should be 0.5cm away from healthy tissue. Graded treatment plan Slightly yellow leaves (less than 3 leaves): Only pruning the damaged parts, focusing on adjusting the maintenance environment. Moderate yellow leaves (4-6 pieces): Check the root system simultaneously and prune the black rot roots. Severe yellow leaves (more than 7 pieces): The cause must be comprehensively investigated and systematic treatment implemented. Yellowing of Cymbidium leaf tips, depth analysis, light environment control tips, Cymbidium is suitable for a 2000-3000lux scattering light environment. Receive 3 hours of morning light every day in spring and autumn, use sunshade nets to filter 50% of the light in summer, and extend it to 5 hours in winter. Rotate the flowerpot regularly to ensure uniform light reception. Precise humidity control method The air humidity should be maintained within the range of 60-75%. Configure a hygrometer for real-time monitoring, use a atomizing humidifier to run for 1 hour in the morning and evening, or set up a water-storing pebble layer on the bottom of the basin. Never spray water directly on the heart of the leaves to avoid stagnant water and damaging the heart. The water and fertilizer management equation follows the principle of "see dry, see wet" and uses soft water with pH 5.5 -6.0. During the growing season, special orchid fertilizer diluted 2000 times is applied every 15 days, combined with decomposed soybean cake water once a month. Stop fertilization during winter dormant period and control water until substrate micro-tide. Systematic maintenance solutions establish maintenance logs to record temperature, humidity, fertilization and other data. Conduct matrix testing quarterly to ensure the breathability of plant materials. It is recommended to use a ratio of pine bark, volcanic stone, and leaf soil of 5:3:2, and update the planting material every spring when changing pots.
Through scientific pruning combined with environmental regulation, the problem of yellow leaves of Cymbidium can be effectively controlled. The key is to establish a maintenance system that "puts prevention first, supplemented by treatment", so that this "King's Fragrance" can regain its emerald leaf luster.