Turn right on Main St. Site is across the street.
The plant was erected in 1963, named Scotch Fertilizer Ltd., and co-owned by Cyanamid and independent shareholders. Four years later, Cyanamid bought out the shareholders and renamed the centre North Middlesex Fertilizer Ltd. The Co-Op was later operated by Cargill, and then Hensall Co-Op.
Due to increasing pressure to remove the fertilizers and chemicals from urban centres, as well as a shortage of space, the co-op was relocated to the site on New Ontario Rd.
The buildings were demolished in 2016, and a gas-key depot is all that remains on the site.
In December 1983, a fire destroyed the shop area and heavily damaged the second floor. Volunteer firefighters from Ailsa Craig and Parkhill quelled the blaze, but large quantities of bulk fertilizer were damaged by water. A new facility was built that was four times the capacity of the old plant, at a cost of $300,000.
Farmers relied heavily on the service and products provided by the Co-op, like bagged fertilizer (and later, custom-mixed bulk fertilizer), seed, chemicals, and various forms of nitrogen.