Ottawa: The United States has announced plans to impose additional tariffs on fresh Canadian-grown mushrooms following a preliminary anti-dumping investigation by the U.S. Department of Commerce. The proposed measures could affect Canadian mushroom exporters and further strain cross-border agricultural trade.
The preliminary ruling recommends an 8.26 per cent anti-dumping duty on most fresh mushrooms imported from Canada. In addition, three Canadian producers have been assigned individual duty rates based on the investigation. Champ’s Fresh Farms Inc. faces a proposed tariff of 8.71 per cent, Highline Produce Limited would be subject to an 11.80 per cent tariff, while Farmers’ Fresh Mushrooms Inc. has been assigned a two per cent duty.
Mushrooms Canada strongly disagrees with the findings. Chief Executive Officer Ryan Koeslag said the preliminary decision reflects the complexities of U.S. anti-dumping regulations rather than the realities of the North American mushroom market. He argued that a fair comparison of average market prices in Canada and the United States would not support allegations that Canadian producers are selling mushrooms below market value.
Earlier this year, the U.S. Department of Commerce also imposed a 2.84 per cent countervailing duty on Canadian mushroom imports following allegations that Canadian producers benefited from unfair government subsidies. The Canadian mushroom industry has rejected those claims, maintaining that its producers compete fairly in the marketplace.
The current anti-dumping investigation was launched in January 2026 after a complaint by the Fresh Mushrooms Fair Trade Coalition, a U.S.-based industry group that sought tariffs of up to 44 per cent on Canadian mushroom imports.
Industry representatives say the preliminary tariff rates are significantly lower than those initially requested, which they believe demonstrates that the original allegations were overstated. Nevertheless, they remain concerned about the impact the proposed duties could have on Canadian growers, exporters and cross-border trade.
The proposed anti-dumping duties are separate from the broader tariff measures introduced by U.S. President Donald Trump, whose administration has imposed tariffs on several Canadian industries, including steel, aluminum, automobiles and other manufactured products.
Mushrooms Canada has confirmed that it will continue participating in the U.S. trade proceedings and will present further evidence in support of Canadian producers before a final determination is made. The industry remains confident that the allegations of unfair pricing are not supported by the commercial realities of the North American mushroom market.