Don Wertman entered the seed industry as a trainee in 1966. Learned production, seed conditioning and distribution of seed corn, certified cereal grain, soybean and sweet corn seed. Engaged in seed sales and management of Seem Seed Farms Inc. Emmaus , Pennsylvania in 1973 . Named Vice President and General manager of successor corporation Seedway Inc. in 1974. Executive Vice President of Seedway Inc. Hall, New York in 1978. President of Seedway Inc. in 1987 served as Chief Operating Officer of Seedway LLC until retirement in 2015. Also served as Board Chair of Allied Seed, Nampa, Idaho from 2001-2015.
Served the seed industry as President of the New York, Pennsylvania, Atlantic, and Western Seed Associations and as Chairman of the American Seed Trade Association in 2003-4.