1912

United States first 3 billion bushel corn crop grown on 110,000,000 acres

1918

First commercial hybrid corn cross made

1926

Rolland Stone makes first commercial crosses with seed from University of Illinois.

1928

Rolland Stone and his father, Percy form P.A. Stone and Son Seed Co. to sell hybrid seed corn

1939

Art Sieben plants first seed production fields and forms Sieben Hybrids

1942

United States again raises 3 billion bushels of corn but only utilizes 89,000,000 acres due to hybrid efficiency.

1950

Bohlen Brothers Seed Co was formed in Moweaqua, IL

1959

Richard Stone, son of Rolland Stone, joins Stone Seed Co.

1971

Chan Sieben joins Sieben Hybrids

1972

Todd Sieben joins Sieben Hybrids

1979

Rolland Stone retires from Stone Seed

1980

Andy Stone joins Stone Seed Co.

1983

PIK (Production-in-kind) program year--national corn acreage reduced by 25-30%

1985

Phil Jordan hired as VP of Seed Operations by Sieben hybrids

1987

Jim Hedges and Brian Zindel purchase Bohlen Brothers facility and form Moweaqua Seed Co.

1991

Jack Smith hired as VP of Sales by Sieben hybrids

1996

The CORE Group is formed. Brad Biddick of Trelay Seed Co. asks Andy Stone to form a regional seed company alliance. They are joined by Fontanelle Hybrids, Stewart Seeds, and Doebler's Pennsylvania Hybrids.

2000

Phil Jordan and Jack Smith purchase Sieben Hybrids

2003

Trent Griffith purchases 50% of Sieben Hybrids from Jack Smith.

2005

Stone Seed Company and 3 CORE Group partners join Monsanto's American Seeds, Inc.

2006

First Dominator Series hybrids introduced.

2006

Sieben Hybrids becomes a member of The Stone Seed Group and American Seeds. Trent Griffith is named sales director.

2006

Stone Sales Team participates in in-depth training at Monmouth research station.

2007

Moweaqua Seeds becomes a member of The Stone Seed Group and American Seeds.

2007

Corn acres in the United States rise to 89,000,000 for the first time since World War II

2007

A combined 204 years of seed company history is represented as The Stone Seed Group "brings together Regional Excellence."