The best way to understand local soil conditions is to perform a simple test. The rate water is absorbed in the soil usually will tell us alot about soil and about the kind of plants that will perform well. Nobody like to waste money on a plant that dies so this test us worth the effort.
If following chart will help you understand what soil type you are working with:
Clay more than 30 minutes
Sandy loom 15-30 minutes
DG 6-15 minutes
Sand less than 6 minutes