Wayne Townsend, the curator of the Dufferin County Museum & Archives, has written a book about Orangeville. The Global Genealogy web site has a write-up about the book and a brief bio of Wayne. Part of it specifically mentions corn flower:

In the last two years, since discovering the Dufferin County connection to W. J. Hughes “Corn Flower,” the museum has collected over 500 pieces of Corn Flower and catalogued the archival materials of the company.