How many days is the flowering period of Jianlan 'Yandangsu'? Price and picture introduction

It originated in Yandang Mountain, Yueqing, and has a cultivation history of more than 600 years. Its original name was Yandang Suxinlan, commonly known as Yandangsu. It belongs to autumn orchids. According to relevant historical records, Yandangsu has a deep connection with Zhang Lun, a famous minister during the reign of Emperor Yingzong of Ming. Zhang Lun was upright as an official and repeatedly impeached eunuchs and sycophantic ministers. He was not promoted for 20 years in office and resigned in the twelfth year of Chenghua. After returning to his hometown in Yueqing, Zhang Lun often admired plum blossoms and appreciated orchids with old friends, and moved orchids from the mountain to his home for careful cultivation. Whenever friends visited, Zhang Lun gave orchids back as gifts. People at the time admired Zhang Lun's character and the elegance of this orchid, and all considered it an honor to receive one as a gift. Over time, orchid cultivation became a trend in the area from Nancun to Dajing. Later generations, because Zhang Lun was also called Zhang Dajing, called this orchid "Dajingsu." After the Qing dynasty, Zhang Lun's clan declined, and "Dajingsu" spread among the common people. More than 100 years ago, orchid enthusiasts in Dajing, through selection and breeding, cultivated this variety with emerald green leaves, elegant and delicate form, a graceful and unrestrained leaf posture, blooming from August to November in autumn, with flowers in alternating yellow and white, a color as clear as jade, pure and elegant, and a peculiar fragrance that assails the nostrils. As soon as it reached the market, it was eagerly purchased and extensively cultivated by orchid enthusiasts in Yueqing. Because it was collected from Yandang Mountain, orchid enthusiasts unanimously named it Yandangsu. In recent years, this flower has become very widespread among the people in the Wenzhou and Taizhou areas. Because it is planted most abundantly in Dajing Town, Yueqing City, Wenzhou (that is, the location of Yandang Mountain), it is also called Dajingsu.

This flower has slender peduncles that rise above the leaves, large flowers that do not deform even after being open for a long time, a large lip that does not curl, a quiet fragrance, easy sprouting, easy flowering, and low susceptibility to disease. Its leaves are slender and tall, lush and verdant, handsome and graceful.