End of October to early December.

The harvest time of Jerusalem artichoke is generally from the end of October to the beginning of December, that is, after the autumn frost. Jerusalem artichoke is native to North America and was introduced to China via Europe. It is now cultivated in most areas of China. Jerusalem artichoke is cold-resistant and drought-resistant, and its tubers can survive the winter safely in the frozen soil at -30°C. Seedlings in early spring can tolerate light frost, and adult leaves in autumn can tolerate a short period of -4 to -5°C.