Toronto is not only the city with the largest population in Canada (2.7 million people), but it is the 4th largest city in North America, after Mexico City, New York, and Los Angeles. Greater Toronto has 7 million people. It sits along the north edge of Lake Ontario, so for Canada it is in the far south. Lake effects from the Great Lakes keep Toronto's climate mild, moist and unpredictable.
For me it is always a botanic tour, so here is a brief look at Toronto's plants.