​1920: Farm Bureau members organize local cooperatives in the United States.

1927: Nine local cooperatives organize to form Illinois Farm Supply Company.

1955: Illinois Farm Supply Company adopts the FS trademark.

1961: The corporate office of Illinois Farm Supply Company moves from Chicago to Bloomington, Ill.

1962: FS Services, Inc. organizes through the merger of Illinois Farm Supply and Farm Bureau Service Company of Iowa.

1965: Wisconsin Farmco Service Cooperative merges with FS Services, Inc. Producers Seed Company merges with FS Services, Inc.

1969: FS Services Inc. and Illinois Grain Corporation enter into a “Combination of Efforts” agreement.

1980: The consolidation of FS Services, Inc. and Illinois Grain Corporation establishes GROWMARK, Inc.

1985: The integration of Midwest grain terminals and merchandising operations between GROWMARK and Archer Daniels Midland Company creates ADM/GROWMARK.

1994: GROWMARK acquires the assets of United Co-operatives of Ontario, and more than 30 member cooperatives in the Canadian province join the System.

GROWMARK purchases half of UPI, Inc., a joint venture with Suncor Energy Products, Inc.

1996: GROWMARK acquires ownership in maltaCleyton, a Mexican feed manufacturer.

2000: GROWMARK begins marketing products directly to additional cooperative customers throughout the Midwest and in eight western states.

2001: GROWMARK adds the Asgrow® and DEKALB® brands from Monsanto® to its seed offerings.

2002: GROWMARK acquires agronomy and seed businesses in the northeastern U.S. which are operated as GROWMARK FS, LLC and SEEDWAY, LLC.

2003: GROWMARK and TruServ Canada Cooperative Inc. create an alliance to provide retail products to Ontario member cooperatives and Country Depot locations.

FS Preferred Insurance Company is created.

2004: GROWMARK and Decision Commodities form an alliance to deliver grain risk management products and services.

2005: GROWMARK, Inland Co-operative, Inc., and Simcoe District Co-operative Services form a joint venture called FS PARTNERS in Ontario, Canada.

2006: GROWMARK acquires the assets of McCollister & Co., and creates GROWMARK Lubricants, located in Council Bluffs, Iowa.

GROWMARK adds retail subsidiaries New Century FS, Inc., AgVantage FS, Inc., and New Horizon FS, Inc.

Illini FS, Inc. becomes the Illini FS Division of GROWMARK.

GROWMARK and FS member companies partner to create Ag View Grain LLC and Total Grain Marketing, LLC (TGM).

2007: GROWMARK acquires the assets of STAR Energy, LLC.

The services of AgriVisor®, LLC are incorporated into GROWMARK as a joint venture with Illinois Farm Bureau.

GROWMARK, Two Rivers FS, Inc., RIVERLAND FS, Inc., and West Central FS, Inc. partner to create WESTERN GRAIN MARKETING, LLC (WGM).

2008: GROWMARK acquires the Menard County refined fuels terminal near Petersburg, Ill.

GROWMARK acquires a facility in Waterloo, Iowa, to serve as a second Tank & Truck Center

2009: The GROWMARK internship program celebrates its 50th anniversary. Nearly 700 students from the Midwest, East Coast, and Ontario, Canada, have participated in the program.

NORTHERN GRAIN MARKETING, LLC (NGM) is formed by the acquisition of Harmon Grain, LLC and merger with Ag View Grain, LLC.

FS PARTNERS becomes a division of GROWMARK.

Great Lakes Grain becomes a partnership between GROWMARK and AGRIS Co-operative, Ltd.

2010:  AgVantage, STAR, New Century, Servco, and Frontier FS become retail divisions of GROWMARK.

Servco FS, Frontier FS, and GROWMARK partner to purchase the assets of SemFuel in Wisconsin.

Eight FS member cooperatives and GROWMARK partner to purchase the assets of Tri-County Petroleum.