After entering November, due to the gradual decrease in temperature, Xin Tianma ceased to grow, individuals were stereotyped and went into a dormant period, so cryogenic freezing should be prevented. In particular, arrowheads are easily frozen during the winter, and it is best to use arrowheads for medicine in the winter harvest. If the winter does not close, you must take cold measures before freezing, cover the leaves, etc. to keep warm and prevent freezing, and then remove them in the coming spring to facilitate growth. The temperature is preferably maintained at 1-5°C, and the humidity is preferably maintained at 30%. China Agricultural Network Editor
How Tianma Winter and Spring Management