How long is the golden lotus period in dry land?

It belongs to Ranunculaceae and is a perennial herb. Trollius chinensis grows in plateau swamps, shady places and sparse forests between 1 100 and 2200m above sea level. It germinates in May every year, with a height of about 30-70 cm, and blooms in July. Flowering for 20-30 days, the flowers are golden yellow, and the patterns are similar to lotus flowers, so they are called Trollius. It mainly grows in the marshes of Xishuiquan Ecological Reserve and Jiapigou Ecological Reserve in Hongshan Military Racecourse.