How to raise cymbidium flowers
As a unique existence in the orchid family, Cymbidium macrophylla is favored by gardening enthusiasts for its tall and straight scaps and huge flowers. However, if you want to grow high-quality plants with bright leaves and reflowers every year, you need to master their special growth habits and maintenance skills. This paper will systematically analyze the key points of maintenance of Cymbidium macrophylla from environmental control to disease and insect pest control. Four elements of basic maintenance of Cymbidium macrophylla Temperature and light management Cymbidium macrophylla has typical temperate orchid characteristics. The optimal temperature during the day is 20 - 28 ℃ and needs to be maintained at 12 - 18 ℃ at night. The temperature difference between day and night above 8 ℃ can effectively promote flower bud differentiation. In winter, it is necessary to maintain a wintering temperature above 10 ℃ to avoid frostbite of fleshy roots. As a rare high-light-demanding variety among orchids, full sunshine can be accepted in spring and autumn, 30% shade is needed in summer, and direct light should be guaranteed for more than 4 hours a day in winter. The moisture control technique adopts the watering principle of "moistening but not wetting". Water needs to be replenished when the surface of the substrate becomes white. During the growing period, the air humidity is maintained at about 80%, and it can be humidified by laying pebbles on trays and injecting water. During the dormant period (2 months after flowering), the water needs to be controlled to a micro-moisture state in the substrate, and 50% humidity needs to prevent root rot. Special attention should be paid to proper water control during the flower bud differentiation period (September to October) to improve the quality of flowering. Scientific fertilization plan Apply orchid special fertilizer with a ratio of nitrogen, phosphorus and potassium of 3:1:2 every half month during the seedling period (1 - 2 years old) to promote leaf development. Mature plants (more than 3 years old) are replaced with organic liquid fertilizer mainly composed of phosphorus and potassium fertilizers, combined with foliar spraying of potassium dihydrogen phosphate (diluted 1500 times) once a month. Adding calcium and magnesium fertilizers during the budding period can enhance the hardness of flower stems and avoid lodging. Guidelines for the Control of Pests and Pests of Cymbidium macrophylla (T-J) Diseases occur most frequently in the plum rainy season. When small brown spots appear on the leaves in the early stage, the diseased leaves should be cut off immediately, and mancozeb (800 times) and difenoconazole (1500 times) should be sprayed alternately. Red spiders can be sprayed with azifenil (3000 times) every week and eradicated three times in a row. It is recommended to control scale insects that spirotetramate (2000 times)+ silicone additive, focusing on spraying leaf axils.
Through precise environmental control and pest prevention, as well as timely pot replanting (carried out in spring every 2 - 3 years), Cymbidium macrophylla can maintain a vigorous growth trend. Remember to choose a mixed substrate of pine bark + volcanic stone (3: 1) to ensure good breathability and drainage, and you will be able to enjoy its spectacular umbels year after year.