On Friday, the Ontario government announced it will develop a new branch of the Liquor Control Board of Ontario to oversee marijuana sales.
"Cannabis will remain a carefully controlled substance in Ontario", Ontario Finance Minister Charles Sousa said.
Eventually about 150 standalone stores will be opened across Ontario by 2020, including 80 by July 1, 2019.
The Ontario government will manage the sale and use of marijuana through an online service and about 150 stand-alone stores.
To protect young people in Ontario, the province will prohibit individuals under the age of 19 from possessing or consuming recreational cannabis, which will allow police to confiscate small amounts of cannabis from young people.
Ontario is the first to put out a provincial framework for the federal push to legalize recreational marijuana.
The location of the stores will take into consideration concerns municipalities might have, such as the proximity of schools, the province said.
Ronan Levy, a director of Canadian Cannabis Clinics, which operates two London offices to dispense medical marijuana prescriptions, said he believes there will still be a place for medical marijuana in the market.
"That's a decision that has not yet been made and that's something that we'd welcome comments from citizens on", he said.
Online distribution that will be available across Ontario from July 2018 onward.
Mackie said government distribution also will ensure the marijuana is good quality and uncontaminated by pesticides, fungus or other drugs.
Pricing and tax decisions will be made after consultations with the federal government, although Prime Minister Justin Trudeau's Liberal Party want to keep prices low to drive out the black market.
"If this Ontario government introduces their model the way it's being presented today, we will see the black market continue to exist by their own policy", Emery told reporters after the province's press conference. But Mr. Naqvi said the possibility of allowing the consumption of cannabis in some licensed establishments could be part of a later phase of legalization, after more study.
Store sales in Ontario will be over-the-counter only, and ID will be required to verify customers are aged over 19 - which is also the legal drinking age in Ontario. "I suspect we would be looking at other options".
"We are working closely with our partners to ensure law enforcement is well trained, to build capacity across the country and at our border, and to raise awareness about the dangers of drug-impaired driving", Goodale said in a statement.
According to the official press release, one of the stated aims of Ontario's proposal is to squeeze out criminals from the black market, now run by organizations such as the Hell's Angels and the Italian Mafia as well as various aboriginal and immigrant street gangs.