What is the reason why the stiff buds of orchids fall off?

Through many years of orchid cultivation practice, the author found that orchid flower bud differentiation is in the mature stage of new seedlings, which lasts for nearly one year. General orchid after 1 year of nutrition accumulation, bud unearthed. The florescence of each variety is different. After the buds of Cymbidium, Cymbidium, C The process can take as little as five or six months, or even seven months. Four season orchid, Xia Han orchid and so on from bud unearthed to flowering, the time is not long, short more than 20 days, long 30-40 days.

No matter the varieties with or without vernalization period, attention should be paid to the management of fertilizer, water and light in the vegetative and reproductive growth periods. There are many reasons for the shedding of rigid buds of orchids. Most of them are caused by excessive humidity, excessive fertilization, poor ventilation and so on. General flower bud differentiation is enough to show adequate nutrition, there is no need to continue to fertilize, only foliar fertilizer on it. The so-called flowering period should pay attention to fertilizer and water management, that is, pay attention to foliar topdressing. When the bud is unearthed, if it is blindly fertilized and irrigated, the stiff buds will fall off in the event of poor ventilation.

Orchids in the bud period, it is necessary to strengthen the topdressing of phosphorus and potassium fertilizer to promote the expansion of the bud, regardless of sterilization or foliar spraying, the interval is 7-10 days, can not be too frequent, the fertilizer liquid can not be too thick, properly see more sunlight, otherwise it will hurt the bud and cause heartache. In addition, attention should be paid to water and fertilizer control before flowering. When the bud is small, we should pay attention to buckle the water once or twice and keep the basin soil dry, which can promote flower bud differentiation, which is directly related to the later flowering quality.

Nitrogen fertilizer should be applied during the vegetative growth period of new seedlings to promote plant growth, achieve disease resistance and drought resistance, and ensure the normal growth and development of flower buds.