Yanlai Mushroom needs horsetail pine to form mycorrhizal roots, so it mostly grows in the pine forests, and the growing conditions are very harsh, the environment should be cool and clean, and the soil should be soft, and there needs to be a thick pile of pine needles, which makes the Yixing area located in the hilly area of Jiangnan a place of origin of Yanlai Mushroom.
Yanlai Mushroom name comes from the time of the year because of the appearance of wild goose mushrooms, every spring and fall, in the hilly areas of Jiangnan pine forests will appear in the figure of wild goose mushrooms, in February of the lunar calendar, the swallows camping nests when the name of "Yanlai Mushroom", the fall of the geese south of the season when the picking of "wild goose mushrooms", to the cold dew time of the day. "to the cold dew season when the pine flowers fall to the ground for the best.