The youth of China are going to pot at what the country’s drug cops fear is a dizzying rate — and they blame weed-loving US and Canadian stoners and recreational legalization for the trend.

“There has been an obvious spike in marijuana smuggling from North America and this has created a new challenge for narcotics control in China,” the National Narcotics Control Commission warned in a report.

The commission blamed legalization in Canada and parts of the US — as well as exchange students and wealthy, globe-hopping Chinese entertainers and celebrities who toke up abroad and want to keep the party going back home.

This led to a 25 percent rise in cannabis “abuse” in 2018 over the year before — though the total number was hardly cause for reefer madness, with just 25,000 criminal cases in a country of 1.3 billion.

“Young people studying abroad are more vulnerable to Western subcultures,” the commission said, according to the South China Morning Post.

Recent arrests have included that of a student who was busted with pot and told authorities he’d become “addicted” to marijuana while studying in Canada, and arranged for weed shipments when he returned to China.

Sentences for those busted for pot can be severe, with three years or more behind bars for possession or use.