Nature of Operations	3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	1. Nature of operations TerrAscend Corp. (the "Issuer") was incorporated under the Business Corporations Act (Ontario) on March 7, 2017. The Issuer, through its subsidiaries, TerrAscend Growth Corp. (“TerrAscend”) and its subsidiaries (collectively, "the Company”), is a leading North American cannabis company. TerrAscend has vertically integrated licensed operations in Pennsylvania, New Jersey, Michigan, Maryland and California. In addition, the Company has retail operations in Ontario, Canada with a majority-owned dispensary in Toronto, Ontario, Canada. In the United States, TerrAscend’s cultivation and manufacturing provide product selection to both the medical and legal adult-use markets. Notwithstanding the fact that various states in the United States have implemented medical marijuana laws or have otherwise legalized the use of cannabis, the use of cannabis remains illegal under U.S. federal law for any purpose, by way of the Controlled Substances Act of 1970. The Company operates under one reportable segment, which is the cultivation, production and sale of cannabis products. The Company owns a portfolio of operating businesses, including: • TerrAscend New Jersey (“TerrAscend NJ”), a majority owned operation with three dispensaries, and a cultivation/processing facility; • TerrAscend Maryland (“TerrAscend MD”), a wholly-owned operation with four dispensaries, and a cultivation/processing facility; • TerrAscend Pennsylvania (“TerrAscend PA”), a wholly-owned operation with six dispensaries, and a cultivation/processing facility; • TerrAscend Michigan (“TerrAscend MI”), a wholly-owned operation with twenty dispensaries, one cultivation facility, one processing facility, and two cultivation/processing facilities; • TerrAscend California (“TerrAscend CA”), a wholly-owned operation with four dispensaries, and a cultivation facility; and • TerrAscend Canada Inc. (“TerrAscend Canada”), a cannabis retailer in Ontario, Canada with a majority-owned dispensary in Toronto, Ontario, Canada ("Cookies Canada"). The common shares in the capital of the Company ("Common Shares") commenced trading on the Canadian Securities Exchange ("CSE") on May 3, 2017 under the ticker symbol "TER" and continued trading on the CSE until the listing of the Common Shares on the Toronto Stock Exchange (the "TSX"). Effective July 4, 2023, the Common Shares commenced trading on the TSX under the ticker symbol "TSND". The Common Shares commenced trading on OTCQX on October 22, 2018 under the ticker symbol "TRSSF", which was subsequently changed to "TSNDF", effective July 6, 2023. The Company’s registered office is located at 77 City Centre Drive, Suite 501, Mississauga, Ontario, L5B 1M5, Canada.

Nature of Operations

3 Months Ended

Mar. 31, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Nature of operations

TerrAscend Corp. (the "Issuer") was incorporated under the Business Corporations Act (Ontario) on March 7, 2017. The Issuer, through its subsidiaries, TerrAscend Growth Corp. (“TerrAscend”) and its subsidiaries (collectively, "the Company”), is a leading North American cannabis company. TerrAscend has vertically integrated licensed operations in Pennsylvania, New Jersey, Michigan, Maryland and California. In addition, the Company has retail operations in Ontario, Canada with a majority-owned dispensary in Toronto, Ontario, Canada. In the United States, TerrAscend’s cultivation and manufacturing provide product selection to both the medical and legal adult-use markets. Notwithstanding the fact that various states in the United States have implemented medical marijuana laws or have otherwise legalized the use of cannabis, the use of cannabis remains illegal under U.S. federal law for any purpose, by way of the Controlled Substances Act of 1970.

The Company operates under one reportable segment, which is the cultivation, production and sale of cannabis products.

The Company owns a portfolio of operating businesses, including:

•

TerrAscend New Jersey (“TerrAscend NJ”), a majority owned operation with three dispensaries, and a cultivation/processing facility;

•

TerrAscend Maryland (“TerrAscend MD”), a wholly-owned operation with four dispensaries, and a cultivation/processing facility;

•

TerrAscend Pennsylvania (“TerrAscend PA”), a wholly-owned operation with six dispensaries, and a cultivation/processing facility;

•

TerrAscend Michigan (“TerrAscend MI”), a wholly-owned operation with twenty dispensaries, one cultivation facility, one processing facility, and two cultivation/processing facilities;

•

TerrAscend California (“TerrAscend CA”), a wholly-owned operation with four dispensaries, and a cultivation facility; and

•

TerrAscend Canada Inc. (“TerrAscend Canada”), a cannabis retailer in Ontario, Canada with a majority-owned dispensary in Toronto, Ontario, Canada ("Cookies Canada").

The common shares in the capital of the Company ("Common Shares") commenced trading on the Canadian Securities Exchange ("CSE") on May 3, 2017 under the ticker symbol "TER" and continued trading on the CSE until the listing of the Common Shares on the Toronto Stock Exchange (the "TSX"). Effective July 4, 2023, the Common Shares commenced trading on the TSX under the ticker symbol "TSND". The Common Shares commenced trading on OTCQX on October 22, 2018 under the ticker symbol "TRSSF", which was subsequently changed to "TSNDF", effective July 6, 2023. The Company’s registered office is located at 77 City Centre Drive, Suite 501, Mississauga, Ontario, L5B 1M5, Canada.