Knoxville Main Office

Mark White has been involved in agriculture his entire life. He was born and raised on a farm in Lucas County. He began farming right out of high school and farmed full time for 20 years until he took a sales job for the Chariton Farmers Coop.

In 2005 he came to work for Smith Fertilizer and Grain as an agronomist. Two years later he was moved into the home office and began working in administration. This included managing the Knoxville location and being the primary truck dispatcher. A year later he also became the grain merchandiser for SFG. Mark attends annual marketing seminars and reads several daily grain articles to keep informed on the grain markets.

He enjoys the opportunity to work with our many grain customers. He continues to farm part time which allows him to experience the same ups and downs that our customers feel. Mark and his wife Rhonda have two grown children and two grandchildren.

Hillary Garman serves as the Office Manager at Smith Fertilizer & Grain, where she is dedicated to providing support to customers and team members while ensuring the day-to-day operations of the office run efficiently. She joined the Smith Fertilizer & Grain team in 2025, bringing with her 17 years of experience in the Marketing Department at Cablevey Conveyors, where she managed trade shows, events, and marketing initiatives. Hillary is proud to bring her experience and positive attitude to Smith Fertilizer & Grain as she helps continue the trusted service SFG has provided to the community for generations.

Hillary is a graduate of Indian Hills Community College and has proudly called Oskaloosa, Iowa, home for many years. Outside of work, she enjoys spending time with her family and friends. She is the proud mother of four children and grandmother of five, and she is an active member of Osky 1st Assembly of God.