Vernalization time of orchids

Author: Beiyuanlan people

The vernalization of orchids refers to the low temperature process that must be experienced during the reproductive growth of orchids. The dormancy of the buds of orchids almost stops and the accumulation of dry matter nutrients supplies the buds. It is of great importance in promoting the growth of flower buds. The vernalization time of orchids varies greatly according to different regions.

Different varieties of orchids have different requirements for vernalization temperature. For example, Jian Lan, Han Lan and Mulan can blossom naturally without special low temperature vernalization, but the best temperature from bud to pre-flowering and even at flowering stage is between 10 and 15 degrees Celsius. If the temperature is too low or too high, it is easy for the orchid to collapse. Even if it opens reluctantly, the opening effect is not ideal and its charm is greatly reduced.

Many orchid friends ask, when is the most appropriate time for vernalization of flowering bluegrass? This problem, for orchid-producing orchid friends, do not have to care about, let nature take its course [except for the control of florescence exhibition] normal flowers. For the northern orchid friends, it is necessary to choose at the right time, usually the bud unearthed about 3-4 cm, stop growing tall, the development is slightly round drum, as long as the vernalization temperature is appropriate [4-10 degrees], vernalization can begin. The ideal temperature during vernalization is between 4 and 10 degrees. Too low and too high temperature has a certain effect on the nutrient accumulation of bud growth and pregnancy. Humidity should not be too high, it is easy to cause rotten root and bud. Therefore, as far as possible depending on the situation, delay the watering time.

The duration of vernalization is for reference only for orchid friends. Of course, vernalization is as full as possible. Spring orchids usually need 30-40 days of vernalization, the requirements of spring orchids in Yunguichuan are relatively low, relatively easy, and even some non-vernalization can blossom normally. In Jiangsu and Zhejiang areas, due to geographical and climatic factors, it is better to prolong the vernalization time appropriately. Spring sword lotus petal is suitable for about 40-50 days, and cymbidium and spring delivery should be more than 60 days. In order to achieve the effect of vernalization and accumulation of nutrients in bluegrass, 1000 times of potassium dihydrogen phosphate can be sprayed on the leaves before vernalization, and then vernalization begins. Promote the accumulation of nutrients, large flowers and colorful flowers. It is forbidden to apply nitrogen fertilizer during vernalization, because the vernalization temperature is low, orchid seedlings can not absorb nitrogen fertilizer, which is easy to cause fertilizer injury and rotten roots.

After vernalization is over, pour through the water [to prevent the bud from entering the water, rot the bud], put the orchid pot at about 15 degrees for 1-2 days, and then transfer to the normal room temperature, which can effectively avoid the hot buds caused by sudden warming. After being transferred to normal room temperature [18-24 degrees], the flower stalk is usually raised quickly [except for some varieties], and the bolls are arranged and flowered for about 5-15 days.

The watering after vernalization is properly disposed of according to different plant materials. Usually petal flowers [lotus petals, plum petals, daffodil petals, etc.], colored flowers [safflower, golden flower, pink flower, etc.], try not to make the plant too wet 7 days before and after flowering, slightly dry and raise flowers, petal shape and color are more ideal, otherwise the petals will be elongated rapidly, the color will be light, and the aroma will be greatly reduced [after vernalization, it is better to have a lower temperature and a better color]. Strange flowers, on the contrary, especially multi-petal odd flowers, slightly wet, lack of moisture, will be in the flower when some small petals are semi-dehydrated and not energetic, sufficient water, will make it bloom more outstanding and beautiful.