Marshall Program Coordinator Adult Agriculture Education. Master Gardener Program. Youth Garden Education. Contact Information 2608 South 2nd Street Suitie E Marshalltown, IA 50158 United States chelsea@iastate.edu (641) 752-1551 Location Information Region: 9 Program Areas: Agriculture and Natural Resources, 4-H Youth Development Base County: Marshall Counties Served: Marshall Teams/Groups Horticulture