The University of Missouri Extension of St. Charles County offers a number of services to the community, ranging from business development specialists to soil testing to educational courses. At the extension office, you can get training to become a certified arborist, join a 4H program or learn tips from master gardeners. In addition, you can call the Hortline at 636-970-3000 and speak to a Master Gardener on Mondays from 12:30-4:30pm. You will get a response within 24 hours.