You can call your local University of Missouri Extension office. They likely have a lot of info specific for your local area. Aside from Soil Tests (inexpensive), they have lots of info. They also could lead you in the right direction. Most locations have a resident Horticulturist. Once you have the right Extension office, you might ask about the local Master Gardener group. They often provide a lot of info, offer classes, have Q & A phone banks, etc.
Bringing compost is gonna be pricey. Do you really need a truckload? nodding
http://extension.missouri.edu/...
Good luck.
