LUBBOCK, TX – U.S. mushroom growers could gain some pricing support after federal trade officials imposed preliminary antidumping duties on most fresh mushrooms from Canada. Landyn Young, program manager with the Center for North American Studies at Texas A&M, says the action could help domestic producers competing against growing import volumes.
The preliminary antidumping tariff is 8.26%, following a separate 2.84% countervailing duty tied to alleged subsidies. Young estimates roughly 81% of fresh mushroom imports could face antidumping tariffs, including 92% of imported Agaricus mushrooms.
Canada supplied an estimated 74,200 metric tons of fresh mushrooms to the United States in 2025, valued at $345 million. Imports accounted for as much as 23% of U.S. fresh mushroom availability, up from 16.8% in 2019.
Domestic Agaricus production remains concentrated in Pennsylvania and California, which together produced about 69% of the U.S. total in 2025.
Young says higher import costs could raise consumer prices, but they may also improve competitiveness for U.S. growers as domestic production declines and reliance on imports increases.
Farm-Level Takeaway: Higher duties on Canadian mushrooms could improve pricing opportunities for U.S. growers while increasing costs for buyers.