Tobacco in Upper Canada

Escaped slaves from Kentucky and Virginia, who  had raised tobacco in their respective states, took those skills with them to Upper Canada in 1819. During the 1820s, the city of Amherstburg, Ontario  became the major location for tobacco farming, and the city attracted even more escaped slaves with experience raising the crop. "Six hundred hogs head [sic] of tobacco was exported to Montreal annually."

The Canadian tobacco market was glutted by 1827, resulting in the dramatic deterioration of both the price and quality of the tobacco; thus the  economic tobacco boom came to an end.

For more see p. 23 in Unwelcome Guests: Canada West's response to American fugitive slaves, 1800-1865, by J. H. Silverman.