Analysis of the Reasons for the Bud Drop, Blackening, and Drying of Orchids
Mini Guide to Plant Management: Content about orchids, a member of the Orchidaceae family. Analysis of the reasons for the bud drop, blackening, and drying of orchids, let's learn about it together next.
Some orchid enthusiasts find that their orchids drop buds, with the early symptoms being blackened and dried buds. This condition is actually orchid bud stasis. The differentiation of orchid flower buds occurs during the maturity of new seedlings and lasts nearly a year. Generally, after a year of nutrient accumulation, the buds emerge from the soil. Different varieties have different flowering periods. For example, after the buds of Cymbidiums, Hu Lan, Mo Lan, Han Lan, Chun Jian, and Lianban Lan emerge from the soil, there is a relatively long period of growth, bud formation, and vernalization. This process can be as short as five to six months or even as long as seven months. For Si Ji Lan and Xia Han Lan, the time from bud emergence to flowering is not long, with the shortest being about 20 days and the longest about 30 to 40 days.
Whether the variety has a vernalization period or not, it is important to pay attention to the management of fertilization and lighting during the vegetative growth and reproductive growth stages. There are many reasons for the blackening, drying, and dropping of buds, most of which are caused by excessive humidity, too much fertilizer, and poor ventilation. Generally, the differentiation of flower buds is enough to indicate sufficient nutrition, and there is no need to continue heavy fertilization; foliar feeding is sufficient. The so-called flowering period should pay attention to the management of fertilization and water, to promote the expansion and growth of flower buds, which is to pay attention to foliar feeding. At the same time, during this period, if the temperature is relatively high and the orchid is still growing, it is necessary to strengthen fungicidal disinfection. After the buds emerge from the soil, if excessive fertilization and watering continue, coupled with high temperatures, stuffiness, and poor ventilation, the buds may blacken, dry up, and drop.
During the bud formation period of orchids, from the start of autumn to the winter solstice, it is necessary to strengthen the application of phosphorus and potassium fertilizers to promote the expansion and growth of the buds. Whether it is fungicidal disinfection or spraying light fertilizer, the interval should be 7 to 10 days. It should not be too frequent or too concentrated, and it should be appropriate to expose the orchids to more sunlight, otherwise, it will damage the buds and lead to rot. Also, attention should be paid to water and fertilizer control before flowering. When the buds are small, it is important to reduce watering one or two times, as this is directly related to the quality of the flowers later. If it is not necessary to participate in orchid exhibitions in a hurry, there is no need to deliberately adjust the temperature and humidity, let them bloom naturally.
During the vegetative growth stage of new seedlings, it is necessary to apply multi-element fertilizers with a focus on nitrogen to promote strong plant growth, achieve disease and drought resistance, and ensure the conditions for flower bud growth. Therefore, whether the buds can bloom normally is closely related to the management in the early stage.
The above introduction to the analysis of the reasons for the bud drop, blackening, and drying of orchids is provided for everyone's learning and understanding!