People in Quebec under the age of 21 won’t be able to buy or possess recreational cannabis as of tomorrow, January 1st, 2020.

The new provincial law is the toughest age restriction in the country since pot was legalized in 2018.

Lol. All the Ontario kids sneaking into Quebec for booze will now be passed by the Quebec kids heading to Ontario for weed.

— ПΣЯM © (@njmckenzie) December 31, 2019

Quebec's government passed Bill 2 this fall. Quebec's junior Health Minister cited concerns about the effect marijuana could have on young, developing brains.

The Quebec Cannabis Industry Association (QCIA) believes that raising the legal age to buy and possess cannbis will steer the most vulnerable consumers towards the black market.

"Public health officials and safety experts who advised the federal government over the implementation of cannabis legalization in the country, as well as many Quebec organizations specializing in cannabis, have advocated for a harm reduction approach by recommending that the minimum age be set at 18- years-old," said Michel Timperio, president of the Quebec Cannabis Industry Association in an October statement.

😱 and yet you can buy liquor at every corner store in quebec when your 18. Something is backwards here. https://t.co/TInjfXkxZI#SupportCannaKnow#Backwardslaw #Freetheweed

— Ganja Deal (@GanjaDeal) December 31, 2019

Quebec has the lowest drinking age in the country at 18 (along with Alberta and Quebec), but the province has been strict on marijuana.

The provincial government also tried and failed to implement a law that would ban homegrown cannabis.