While Canadians are taking time at the grocery store looking for Canadian-made products and labels like the maple leaf, local food growers are ramping up production to meet demand.

Jon Lomow is the co-founder of Fieldless Farms, an indoor vertical farm in Cornwall, Ont. He grows leafy greens and mushrooms year-round and says his produce has been flying off the shelf.

"We are selling out two- to four-times faster, in some instances, maybe f…