This is actually a misconception, not all birch mushrooms are banned from sale.

The birch mushrooms that are banned in China are those that are illegally traded and illegally imported and have not been verified by the customs. These birch mushrooms are of unknown origin and can have excessive bacteria and pesticide content, and some even have heavy metals present.

So the relevant departments will prohibit the inflow of such products into the country, in fact, the regular birch mushrooms are allowed to sell.

Distribution range

Birch mushrooms are very selective for hosts, mainly born under the bark of birch, silver birch, elm and alder or under the bark of living standing trees or on the dead trunks of trees after felling.

Mainly distributed in the northern hemisphere in the northern latitude of 45 ° ~ 50 °. Such as North America (north), Finland, Poland, Russia, China, Heilongjiang, Jilin Province, Japan (Hokkaido) and so on.